6 Regional Meditation Garden Plant Plans — Matched to Your US Climate (Pacific NW Through Southeast)
Regional meditation garden plant plans for all 6 US climates — Pacific NW, Southwest, Southeast, Northeast, Mountain West, and California. Find which plants deliver scent, sound, structure, and calm in your zone.
The same piece of advice has circled the internet for years: for a meditation garden, plant lavender. It’s calming, it smells wonderful, and it nearly ended a Georgia gardener’s patience when every plant rotted by mid-August.
Lavender (Lavandula angustifolia) needs excellent drainage, dry summers, and cold winters to reset its root system — conditions that describe the Pacific Northwest coast, parts of New England, and California’s central coast. For the Southeast, the Southwest monsoon zone, and high-altitude Mountain West gardens, it’s the wrong plant for the right job. The function you’re after — a scent that measurably reduces the stress hormone cortisol — can be delivered by something that actually thrives in your climate.
That’s the premise of this guide. A meditation garden isn’t defined by its plant list; it’s defined by five calming functions: scent, sound, structure, texture, and color calm. Every US region can deliver all five. The plants that do the job differ by climate, soil, and precipitation pattern. What follows are six regional plans, each matched to the specific conditions of that climate, so you stop planting what the internet recommends and start planting what your yard can actually support.
The 5 Calming Functions and Why They Work
Before the regional plans, it helps to understand why these five functions matter physiologically — not just aesthetically.

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Scent is the most evidence-backed of the five. A 2007 study published in Psychiatry Research (Atsumi & Tonosaki, n=22) found that inhaling lavender and rosemary for five minutes measurably decreased salivary cortisol in healthy volunteers. The mechanism runs through the olfactory system directly to the limbic system, which governs stress hormone regulation [7]. This means the plant doesn’t have to be lavender — it has to be aromatic and present in your breathing zone. The aromatic plant changes by region. The cortisol effect does not.
Sound works through a different pathway. University of Minnesota Extension describes the sound of rustling leaves or swaying grasses as “deeply calming,” and identifies pine needles, switchgrass, and similar movement-oriented plants as the most consistent producers of that sound [1]. Penn State Extension adds that the resinous scent of pine needles often travels with it, compounding the effect [5].
Structure creates the psychological condition for meditation: a defined, enclosed space that signals a shift from everyday activity. Year-round structural plants — evergreens, bold-form shrubs, or specimens with strong winter interest — establish the visual room walls that contain the practice. UF/IFAS Extension describes the goal as creating a garden “room” using plants as walls with the sky as ceiling [6].
Texture grounds the meditator physically in the present. University of Minnesota Extension identifies tactile engagement — touching fuzzy leaves, smooth bark, or feathery fronds — as a way to “slow down and engage with your surroundings,” a direct sensory anchor for mindfulness practice [1].
Color calm is not intuitive but is well-documented. Penn State Extension identifies cool colors (blue, purple, white) as neurologically tranquilizing, contrasted with warm colors (red, orange, yellow) that promote activity [5]. Choosing your regional plants from the cool palette is a deliberate neurological decision, not a matter of taste.
Supporting all five functions: a 2021 study cited by UF/IFAS Extension found that spending just 30 minutes per week in a sensory garden over four weeks reduced salivary cortisol levels and measurably improved perceived well-being and productivity [6]. Small time investment. Significant physiological return. The plants just need to match your climate.
For the complete design framework behind these principles, see 9 Garden Elements That Calm Your Nervous System — Backed by Science.

Pacific Northwest Meditation Garden (Zones 7b–9 Coast; Zones 4–6 Inland)
The west-side Pacific Northwest garden carries one defining climate reality: roughly 37 inches of annual rainfall concentrated from October through May, followed by a near-Mediterranean dry summer from July through September. This creates ideal conditions for woodland plants, ferns, and moisture-tolerant natives during the growing season — while simultaneously eliminating most of the Mediterranean plants that dominate generic meditation garden advice.
Scent: Mock orange (Philadelphus lewisii)
Most meditation garden guides recommend lavender for the Pacific Northwest. Lavender struggles west of the Cascades because summer drainage is adequate but winter rain saturates the root zone for six months at a stretch — conditions that promote root rot in Mediterranean-origin plants. Mock orange, by contrast, is native to the Pacific coastal range and evolved for exactly this climate [2]. It fills June and July gardens with an intensely sweet fragrance comparable in concentration to orange blossom, with white flowers on arching stems. For a secondary spring scent, nootka rose (Rosa nutkana) adds a lighter floral note before mock orange peaks.
Sound: Western red cedar (Thuja plicata)
The wind-through-needle whisper of western red cedar is the auditory signature of the Pacific Northwest forest. A single specimen positioned to catch prevailing wind recreates that sound in a residential space. OSU Extension identifies it as one of the most water-wise native choices for PNW landscapes, thriving on ambient rainfall alone once established [2]. On calmer days, western sword fern (Polystichum munitum) fronds create a subtler layered rustle at ground level.
Structure: Oregon grape (Mahonia aquifolium)
A year-round broadleaf evergreen that delivers fragrant canary-yellow flowers in early spring, blue-black edible berries in fall, and holly-like foliage that holds its deep green through wet winters. Oregon grape anchors a PNW meditation garden from every seasonal angle without demanding irrigation in summer.
Texture: Kinnikinnick (Arctostaphylos uva-ursi)
This low-growing native groundcover produces smooth, glossy leaves and bright red berries — a tactile contrast to the soft fern fronds and rough cedar bark nearby. As a mat-former that roots as it spreads, it creates a naturalistic path edge that invites touch without adding vertical intrusion. OSU Extension lists it among the most reliable PNW native groundcovers for water-wise landscaping [2].
Color calm: Pacific bleeding heart (Dicentra formosa)
Blue-green, feathery foliage and arching stems of pink heart-shaped flowers from April through June. Self-seeding readily in part shade, it creates the kind of loose, unfussy drifts that require nothing from the gardener — which is precisely the maintenance level a meditation garden should demand.
Southwest Meditation Garden (Zones 6–11: Arizona, New Mexico, Nevada)
High heat, alkaline soil, UV intensity, and precipitation arriving in violent monsoon bursts rather than gentle spring rain define the Southwest. The meditation garden strategy here works with the desert’s natural rhythm rather than against it — especially the dramatic seasonal color shifts that follow monsoon rain. No region rewards patient observation more consistently.
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→ View My Garden CalendarScent: Cleveland sage (Salvia clevelandii)
No North American native smells more unambiguously meditative. Cleveland sage carries a clean, camphor-sweet fragrance that releases on warm mornings and intensifies on contact with foliage — the same olfactory stimulus documented by Atsumi and Tonosaki to reduce salivary cortisol [7]. Intensely drought-tolerant and native to the western desert edge, it needs no supplemental irrigation after establishment. Desert willow (Chilopsis linearis) provides a secondary scent layer through vanilla-sweet flowers from spring through the post-monsoon season.
Sound: Blue grama grass (Bouteloua gracilis)
Native to the high desert and short-grass prairie, blue grama’s distinctive horizontal comma-shaped seed heads catch wind at the slightest provocation and produce a dry, papery whisper audibly different from the lush rustle of eastern grasses. It asks for nothing: no supplemental irrigation, no fertilizer, and no overwintering protection through Zone 4.
Structure: Agave (various species)
The most reliable year-round structural anchor in the Southwest. Whether Agave parryi (cold-hardy to Zone 5) or Agave americana for Zone 8 and warmer, agave’s geometric rosette holds its form regardless of heat, drought, or wind. Its sculptural presence against gravel or decomposed granite creates the kind of strong visual focal point that contains a meditation space without enclosing it entirely.
Texture: Fairy duster (Calliandra eriophylla)
Pink flowers built entirely of fine red stamens — they feel like soft brushes against the fingertips. Native to the Sonoran Desert, fairy duster blooms twice: in spring and again after monsoon rains, making it one of the few Southwest plants that responds visibly and immediately to rainfall, teaching the gardener to notice and mark seasonal change.
Color calm: Texas sage (Leucophyllum frutescens)
Called “barometer bush” locally because it blooms within days of monsoon rain regardless of calendar date. The lavender-purple flowers against gray-green foliage produce the most distinctly Southwest cool-palette display in any meditation garden. Its bloom timing builds the habit of watching the sky rather than the phone.
Southeast Meditation Garden (Zones 7–10: Georgia, Florida, Carolinas, Tennessee)
The Southeast garden challenge is fungal, not thermal. Humidity above 70% in July and August creates powdery mildew pressure that destroys lavender, many hybrid roses, and a long list of Mediterranean plants recommended by internet garden advice. The meditation garden plants that work here evolved in hot, humid conditions — and several intensify their fragrance after rain rather than declining. That’s not a consolation prize; it’s a competitive advantage.
Scent: Tea olive (Osmanthus fragrans)
Tea olive produces small, cream-colored flowers with one of the most intensely sweet fragrances in the plant kingdom — apricot-honey, frequently described as ripe peaches carried on autumn air. It blooms in waves: fall, winter, and spring — filling the air precisely when the Southeast is most comfortable for meditation outdoors. Crucially, it thrives in the Zone 7–9 humidity that kills lavender, and its fragrance intensifies immediately after rain [6]. Confederate jasmine (Trachelospermum jasminoides), trained on a fence or trellis upwind of your sitting area, adds an intense sweet secondary fragrance in spring through early summer.
Sound: Clumping bamboo (Bambusa multiplex or Bambusa textilis ‘Kanapaha’)
Clumping bamboo — the non-invasive genus, not the running rhizome types — creates a distinctive click-and-whisper as culms contact each other in wind. The sound is acoustically different from any grass: deeper, more percussive, with the whisper of thousands of small leaves layered beneath it. UF/IFAS Extension specifically recommends ‘Kanapaha’ for Southeast sensory gardens, noting its winter hardiness to Zone 7 [6].
Structure: Sweetbay magnolia (Magnolia virginiana)
Semi-evergreen through most of its native range, sweetbay magnolia provides lemon-scented creamy-white flowers in early summer and holds its silvery-backed leaves through mild winters. Native to wetland edges across the Southeast, it handles humidity, occasional wet feet during summer downpours, and heat without complaint. The silvery leaf undersides catch breeze visually, adding a secondary sound-and-motion element.
Texture: Sunshine mimosa (Mimosa strigillosa)
The most tactilely interactive meditation garden plant available in any US climate: this native Florida groundcover closes its feathery leaflets when touched — the natural seismonastic response that makes it immediately engaging for any gardener paying attention. Hardy to Zone 7, it spreads as a low ferny mat that suppresses weeds and requires no mowing [6].
Color calm: Agapanthus (‘Ellamae,’ Zones 7–10)
Globe-shaped clusters of blue-purple flowers on tall stems in June through August. The cool color palette on bold architecture sits against the lush green backdrop of a Southeast summer garden in a way that produces exactly the visual tranquility Penn State Extension identifies as neurologically distinct from warm colors [5].
Northeast Meditation Garden (Zones 4–7: New England, Mid-Atlantic, Great Lakes)
The Northeast is where lavender actually works — and where it’s underplanted because gardeners assume it won’t survive Zone 5 winters. Lavandula angustifolia is reliably cold-hardy to Zone 5, and cold winters reset its root system in a way that prevents the root rot that kills it in the Southeast. More usefully, the Northeast’s four-season character means a meditation garden can deliver sensory stimulation year-round — including through winter, when dried ornamental grasses hold their sound-making quality under snow.
Scent: Bee balm (Monarda didyma) + Anise hyssop (Agastache foeniculum)
Bee balm delivers a citrus-bergamot fragrance on a native, cold-hardy, humidity-tolerant plant — the aromatic properties that Atsumi and Tonosaki documented as cortisol-reducing [7], without lavender’s drainage demands. It thrives in Zones 4–9 and attracts hummingbirds and native bees. Anise hyssop adds an anise-sweet fragrance on purple spikes from summer through frost, cold-hardy to Zone 4. Together, these two natives provide more reliable fragrance performance across Northeast humidity than lavender alone [8].
Sound: Switchgrass (Panicum virgatum)
Switchgrass is named for the swishing sound it makes in wind — a description that happens to be exactly accurate. Illinois Extension recommends it as one of the most effective native sound plants for sensory gardens [8]. Unlike many ornamental grasses that collapse under snow load, switchgrass holds its dried stems upright through winter, continuing to produce sound and visual interest well into March. Its rattling seed heads add a dry percussion through the coldest months.
Structure: Dwarf mugo pine (Pinus mugo ‘Sherwood Compact,’ Zones 2–8)
Year-round evergreen structure that tolerates Northeast winters to Zone 2 without a second thought. When brushed, mugo pine releases a resinous fragrance that Penn State Extension identifies as one of the most distinctive sensory garden scents [5] — adding a secondary scent dimension to the dedicated scent plant. It grows to roughly 3 to 4 feet over a decade, making it suitable for meditation garden corners without eventually overpowering the space.
Texture: Lamb’s ear (Stachys byzantina)
Dense silver-white leaf hairs that feel like felt. University of Minnesota Extension cites lamb’s ear specifically as a plant that encourages tactile engagement with the garden [1]. Cold-hardy to Zone 4, it spreads gently to fill edge gaps and provide contrast against the green and blue of the surrounding planting. Children reach for it instinctively; meditating adults do too.
Color calm: Catmint (Nepeta × faassenii)
Blue-gray flowers on sprawling mounds from late spring through fall, with a second flush after midsummer deadheading. Illinois Extension recommends it among the most effective cool-palette fragrant plants for sensory gardens [8]. Catmint is deer-resistant, drought-tolerant once established, and cold-hardy to Zone 4 — three properties that make it the most reliably low-maintenance color anchor in a Northeast meditation garden.
Mountain West Meditation Garden (Zones 3–7: Colorado, Utah, Wyoming, Montana)
High-altitude gardening confronts challenges that most garden advice doesn’t mention. UV radiation increases by approximately 4 to 5 percent per 1,000 feet of elevation gain, meaning a garden at 7,000 feet receives roughly 30 percent more UV than the same garden at sea level. Wind desiccation is near-constant. Temperature swings of 40°F between midday and midnight are common in summer. Colorado State University Extension summarizes it plainly: “Low humidity, fluctuating temperatures, a short growing season, poor soil characteristics, watering restrictions, wildlife, wildfire, and drying winds make gardening in the mountains a challenge” [3].
The meditation garden strategy that emerges from these constraints — compact plants, fine or gray-green foliage that reflects UV rather than absorbing it, drought-tolerant natives — happens to produce exactly the silver-and-blue palette that Penn State Extension identifies as neurologically tranquilizing [5]. Necessity and aesthetics align.
Scent: Common lilac (Syringa vulgaris)
Colorado State University Extension confirms common lilac survives to 9,000 feet elevation [4]. No Mountain West meditation garden scent anchor is more reliable: an intensely fragrant cloud of purple or white flowers in May and June, followed by a visually calming leafy green shrub through the summer. Cheyenne mockorange (Philadelphus lewisii ‘Cheyenne’) provides a second fragrant wave in early summer, also confirmed to 9,000 feet [4], extending the aromatic season by several weeks.
Sound: Blue grama grass (Bouteloua gracilis)
Native to the Mountain West’s short-grass prairie, blue grama grows to 18 inches with distinctive horizontal comma-shaped seed heads that catch even the lightest breeze and produce a dry whisper characteristic of the high plains. Plant Select — a collaboration between Denver Botanic Gardens and Colorado State University — recommends it as one of the most waterwise high-altitude native choices available [9].
Structure: Rocky Mountain juniper (Juniperus scopulorum)
Year-round evergreen structure in Zones 3 through 7, with aromatic foliage that releases a clean, resinous fragrance when brushed — adding a second scent dimension the dedicated scent plant doesn’t cover. For gardens that want a seasonal flowering accent alongside evergreen anchoring, serviceberry (Amelanchier canadensis) is confirmed to 8,500 feet by CSU Extension [4] and offers fragrant white spring flowers, fine autumn color, and berries that attract birds.
Texture: Rocky Mountain columbine (Aquilegia caerulea)
Colorado’s state flower, with delicate multi-spurred blue-white flowers on fine, ferny foliage. Its intricate flower structure invites close observation without demanding it — the opposite of bold statement plants. The feathery foliage creates a textural softness that contrasts well with the angular gravel and boulder that naturally suit mountain garden aesthetics, and Plant Select confirms its close relative, Denver Gold columbine (Aquilegia chrysantha), to 8,150 feet [9].
Color calm: Blue mist spirea (Caryopteris × clandonensis)
Soft blue-lavender flowers on silver-tinted stems in late summer — the cool palette arriving precisely when most Mountain West gardens are winding down. CSU Extension confirms it to 8,500 feet [4]. Late-season pollinators make it biologically alive at the end of the season in a way that rewards sitting still and watching.
For gardens above 8,000 feet, choose gray-green or fine-leaved plants throughout — blue oat grass (Helictotrichon sempervirens), artemisia species, catmint — because their light-reflecting surfaces handle UV intensity that burns the broad dark leaves suited to eastern climates.
For a detailed plant guide organized around the three high-altitude stressors — UV intensity, wind-scour, and dry cold — see the Mountain West meditation garden plant guide.
California Meditation Garden (Zones 8–11: Coastal and Interior Valleys)
California’s Mediterranean climate — dry summers, mild wet winters — enables meditation gardens that require almost no irrigation after year two, a sustainability level impossible to replicate in any other US climate. The trade-off is fire safety: plant spacing and annual pruning are genuine requirements in fire-prone areas. Both constraints happen to reinforce rather than undermine the Zen aesthetic: open spacing, clean lines, negative space valued as much as plants.
Scent: Cleveland sage (Salvia clevelandii)
The most intensely aromatic California native, with a clean, almost sacred camphor-sweet fragrance that releases on warm mornings and when foliage is brushed — delivering the olfactory cortisol-reduction mechanism documented in the research literature [7] without a drop of summer irrigation after year one. It blooms in lavender-blue whorls in late spring. California lilac (Ceanothus various species) provides a honey-sweet secondary scent layer in March through April, filling the space with fragrance during the season when California’s outdoor weather is most inviting for meditation.
Sound: Pink muhly grass (Muhlenbergia capillaris)
A billowing cloud of fine pink flower panicles from October through December — California’s autumn garden signature, catching horizontal late-season light in a way that reads as almost luminous at dusk. The panicles whisper in any coastal or valley breeze. California poppy (Eschscholzia californica) seed pods add a drier, more subtle rattle in summer, creating a seasonal layering of sounds as the garden shifts from wet to dry season.
Structure: Manzanita (Arctostaphylos species)
The most architecturally distinctive California native: smooth, mahogany-red bark on sculptural twisting branches that need no pruning for form and no irrigation after establishment in most coastal and inland valley climates. Manzanita provides year-round structure with no maintenance demand, and the bark’s smooth, warm surface is tactilely inviting in the same way that aged wood is. Select species appropriate to your elevation: A. densiflora ‘Howard McMinn’ for coastal and Bay Area gardens, A. patula for foothills.
Texture: Buckwheat (Eriogonum species)
California buckwheat transitions its seasonal palette naturally and without intervention: white flowers in spring, rust-orange seed heads in summer and fall, gray-green throughout. The foliage is slightly aromatic and soft when touched. As one of California’s most productive native pollinator plants, buckwheat keeps a meditation garden biologically animated without requiring attention from the gardener.
Color calm: Ceanothus (California lilac)
When Ceanothus peaks in March through May, California gardens shift to an electric blue that no other flowering shrub in the US palette matches. The cool blue and purple display aligns with the neurologically tranquilizing palette Penn State Extension identifies [5]. After bloom, Ceanothus holds dense evergreen foliage as a summer backdrop — year-round structure that earns the garden square footage it occupies. For deeper context on how the dry Zen garden aesthetic translates to California conditions, see Japanese Meditation Garden Styles for the US Backyard.
Regional Substitution Matrix
Each row shows which plant performs a specific calming function in each US region. Across all six climates, the function is identical; only the species changes.
| Function | Pacific NW | Southwest | Southeast | Northeast | Mountain West | California |
|---|---|---|---|---|---|---|
| Scent | Mock orange | Cleveland sage | Tea olive | Bee balm + anise hyssop | Common lilac | Cleveland sage |
| Sound | Western red cedar | Blue grama grass | Clumping bamboo | Switchgrass | Blue grama grass | Pink muhly grass |
| Structure | Oregon grape | Agave | Sweetbay magnolia | Dwarf mugo pine | Rocky Mtn juniper | Manzanita |
| Texture | Kinnikinnick | Fairy duster | Sunshine mimosa | Lamb’s ear | Rocky Mtn columbine | Buckwheat |
| Color calm | Pacific bleeding heart | Texas sage | Agapanthus | Catmint | Blue mist spirea | Ceanothus |
How to Start: First Steps in Any Region
The most common meditation garden mistake is planting too much too soon. A functional garden needs as few as five plants — one per calming function — arranged to create enclosure and a clear focal point. Complexity comes later, after you’ve learned how the plants actually behave in your specific microclimate.
Sequence: Plant your structural anchor first. It establishes the enclosed “room” feeling that defines the space as different from the rest of the yard. Add your sound plant where it will catch prevailing wind. Position your scent plant upwind of your sitting area so fragrance drifts toward you. Place your texture plant at sitting height or below — somewhere hands naturally reach without standing. Add your color plant last, where it’s visible from your primary seated position without requiring head movement to see.
Regional timing: Northeast gardeners plant in fall for spring establishment. Southwest gardeners plant before monsoon season — before July — so roots establish before the most intense heat arrives. Pacific Northwest gardeners plant in October through November when ambient rainfall handles irrigation through establishment. Mountain West gardens plant in May through June once soil temperatures consistently clear 50°F.
For the sound element specifically, water features compound the calming effect of any region’s plant palette. See 6 Meditation Garden Water Features Compared by Decibel Output to match the sound intensity to your garden size and situation.
Frequently Asked Questions
Which US climate is hardest for a meditation garden?
Mountain West gardens above 7,000 feet face the most constraints — short growing season, wind desiccation, high UV, and late spring frosts that can kill early growth on south-facing slopes. But the native high-altitude plant palette is well-documented and reliable: common lilac to 9,000 feet, serviceberry to 8,500 feet, Cheyenne mockorange to 9,000 feet [4]. The challenge is choosing plants rated for your specific elevation rather than your USDA zone alone, since zone and elevation interact differently in the Mountain West than in flatter terrain.
Can I grow lavender in the Southeast?
In most of Zones 7 through 9, lavender (Lavandula angustifolia) struggles because summer humidity promotes fungal root rot in its shallow root system. The interspecific hybrid ‘Phenomenal’ (Lavandula × intermedia) shows somewhat better humidity tolerance and is worth a trial in well-drained raised beds. For reliable SE aromatherapy performance, however, tea olive delivers comparable olfactory effect in conditions that destroy lavender, without the survival uncertainty.
Do I need a large yard?
No. The five-plant framework works in as little as 120 square feet — approximately a 10 × 12 foot corner. For true small spaces, a single potted Cleveland sage on a California or Southwest patio, or a single switchgrass clump paired with lamb’s ear in a Northeast container garden, delivers the core sensory functions without requiring ground space.
Are these plants deer-resistant?
Most aromatic plants are avoided by deer because their volatile oils signal inpalatability. Cleveland sage, catmint, anise hyssop, Russian sage, ornamental grasses, and most salvias are reliably deer-resistant across regions [3]. Agave, manzanita, and Pacific bleeding heart are also low on deer preference lists. In heavy deer pressure areas, start with the structural plant as a physical barrier and build the scent and texture plants inside its protection.
How do I handle the Pacific Northwest’s summer drought?
West of the Cascades, summer drought from July through September is near-universal despite wet winters — an unusual climate pattern that surprises gardeners new to the region. All five plants in the Pacific Northwest plan above (mock orange, western red cedar, Oregon grape, kinnikinnick, and Pacific bleeding heart) naturally adapted to this summer-dry regime and need no supplemental irrigation after establishment, a fact explicitly cited in OSU Extension’s water-wise landscaping guidance [2].
Sources
[1] Trott, R. (2026, February 10). Planning and planting a healing garden. University of Minnesota Extension.
[2] Oregon State University Extension Service. Incorporating Pacific Northwest native plants into your water-wise landscapes.
[3] Colorado State University Extension. Colorado Mountain Gardening Basics (Fact Sheet 7.224).
[4] Colorado State University Extension. Trees and Shrubs for Mountain Areas (Fact Sheet 7.423).
[5] Pennsylvania State University Extension. Creating a Sensory Garden.
[6] UF/IFAS Extension Duval County. (2025). Sensory Garden Delights.
[7] Atsumi, T., & Tonosaki, K. (2007). Smelling lavender and rosemary increases free radical scavenging activity and decreases cortisol level in saliva. Psychiatry Research, 150(1), 89–96. PubMed.
[8] University of Illinois Extension. (2020, February 1). Sensory gardens invite interaction.
[9] Plant Select (Denver Botanic Gardens + Colorado State University). High Altitude Plants.









