Climate Intelligence
Know Your Climate.
Grow What Works.
Most nurseries sell you a plant and say “good luck.” We give you the three systems you actually need to understand what will thrive in your specific yard — not just survive your zip code.
Start With Your Zone
Find Your Grow Zone
USDA Hardiness Zones
The USDA divides the country into zones numbered 1 through 13 based on one thing: the average annual minimum winter temperature. Zone 1 is interior Alaska. Zone 13 is Death Valley.
Each zone covers a 10°F range, split into “a” (colder half) and “b” (warmer half). Zone 8b means your average coldest night of the year falls between 15°F and 20°F. That's the number that determines whether a plant comes back after winter.
What it tells you:Will this plant survive winter here? Nothing more. Two yards in Zone 8b can face completely different summers, rainfall, and humidity. That's where Köppen comes in.
Zone Reference
Köppen Climate Classification
The Köppen system goes further than winter cold. It classifies your climate by the full seasonal pattern: temperature, rainfall, dry seasons, and humidity year-round. Developed by climatologist Wladimir Köppen in 1884, it's the standard language of plant scientists worldwide.
Why it matters for plant selection: A monkey puzzle tree is native to the Chilean Andes — a cool, wet, high-altitude climate (Cfb). Understanding that means understanding what it needs: good drainage, not too much summer heat, consistent moisture. Knowing your Köppen code tells you which plants from anywhere on Earth are likely to feel at home in your yard.
The forgotten tree angle:The nursery industry stocks plants from their own climate. If your climate matches somewhere else in the world that's been largely ignored, you have access to a catalog nobody else is selling. That's our entire business model.
Humid Subtropical
Hot, humid summers. Mild winters. Rain year-round.
Your climate is one of the most forgiving for exotic trees. Plants from Southeast Asia, humid subtropics of South America, and warm-temperate East Asia are all in play. Humidity is an asset — lean into it.
Hot Semi-Arid Steppe
Hot, dry summers. Mild winters. Low annual rainfall.
Drought tolerance is your selection filter. But don't stop there — the Mediterranean coast, South Africa, central Chile, and northwest Argentina all share this climate. The forgotten trees from those regions will thrive where lawn grass surrenders.
Cold Semi-Arid Steppe
Hot summers, cold winters. Low rainfall. High elevation.
Wide temperature swings are your constraint. Central Asian steppe species, high-altitude South American natives, and cold-hardy xerophytes handle this. More range than you think.
Cold Desert
Extreme heat in summer, hard freezes in winter. Minimal rain.
The most demanding climate. Basin-and-Range desert species from the Chihuahuan, Sonoran, and Gobi deserts. Cold hardiness plus drought tolerance. Narrow window — but the right plants are extraordinary.
Microclimate
Your zip code is Zone 8b. Your backyard south-facing wall with the brick foundation? That's Zone 9b. Two feet of soil, a concrete slab, and a wall that holds heat after dark can bump you an entire zone warmer.
Microclimate is the climate your specific plant experiences — not your region, not your neighborhood, not your yard. That exact spot.It's why the same plant dies in the open ground and thrives against the south wall. It's why the corner of your property in the canyon bottom gets 5°F colder than the hilltop 50 feet away.
For rare trees, this is everything.A baobab in Zone 9b might survive outdoors if planted against a heat-retaining wall. The same baobab in the open ground of the same yard might not. Learn your microclimates and you extend what's possible by at least a zone in either direction.
How to Find Your Microclimates
South-Facing Walls
Any wall facing south absorbs sun all day and radiates heat at night. The strip of ground within 3–4 feet of a south-facing brick or stucco wall can be 2–3 zones warmer than the open yard.
Frost Pockets
Cold air sinks. Low spots, canyon bottoms, and depressions collect cold air drainage on still nights. These spots can be 5–8°F colder than surrounding higher ground — a full zone colder. Never plant tender trees there.
Thermal Mass
Concrete, stone, and asphalt absorb heat and release it slowly. Driveways, patios, and foundations create warmer surrounding temperatures. Plants near these surfaces experience milder nights.
Wind Exposure
Wind dramatically increases plant stress during cold events. A sheltered courtyard or a north-facing windbreak can make the difference between a plant surviving a hard freeze and losing it.
Tree Canopy
Established tree canopy above tender plants buffers radiant heat loss on cold nights — the same principle as a greenhouse. A 30% canopy cover overhead can prevent several degrees of frost damage.