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Step 1 · Start with the official map

Find your USDA growing zone.

Search your location on the map. Then confirm the exact zone so the rest of this guide can respond to you.

  1. 1Search or zoom
  2. 2Select your location
  3. 3Confirm the zone below
Official USDA 2023 interactive experienceOpen full screen ↗
Found it on the map?

Carry your zone through the whole guide.

Hardiness answers how cold winter is on average. Soil, drainage, sun, humidity and microclimate remain separate checks.

No location or zone is assumed.

What the number means

Select a zone to see its 5°F average annual extreme-minimum temperature band.

USDA zones use 1991–2020 weather data. They do not measure the coldest temperature that can ever occur, summer heat, humidity, freeze timing or soil performance.

Step 2 · Explore the site conditions

A growing zone is only the beginning.

Explore a measured educational parcel, then enter evidence from the actual planting site. The model is representative—not parcel data.

Representative model · measured in feet
Representative parcel320 × 220 ft · 70,400 sq ft
Relative elevation 3.4 ftClick or use arrow keys to sample the model
Rainfall visualization
Accessible model description and measurements
Representative geometry used in the educational visualization
ElementModel measurementMeaning
Parcel320 × 220 ftDemonstration footprint, not the visitor’s property
Relief6.8 ft maximumIllustrates runoff toward a modeled low point
Raised bed6 in highExtension-backed production example; final design requires a site check
Mature lavenderUp to 3 ft wide × 2 ft highRepresentative English lavender form
Conditions-aware recommendations

Plants matched to the evidence you provide.

Cold-hardiness is a gate, not a guarantee. Missing inputs stay visibly incomplete.

Browse all live plants
Confirm a USDA zone to filter these plants. Add soil and site evidence for a more useful explanation.
Learn the why

Growing-zone education beyond a colored map.

Short answers open into practical guidance and primary sources, without hiding uncertainty.

01What a USDA zone actually measures

The 2023 USDA map is based on the average coldest winter night of the year, using 1991–2020 weather data. Each zone spans 10°F and each half zone (a or b) spans 5°F. It says nothing about summer heat, humidity, rainfall or soil.

How to use the USDA map

02Why your yard can differ from the map

Slopes, low spots, buildings, pavement, wind and nearby water all create small pockets that run warmer or colder than the map. Cold air settles in low ground, so a hilltop and the bottom of the same field can behave like different zones.

03Wet winters are harder on lavender than cold

Lavender handles cold far better than wet roots. In Michigan, more plants are lost to soggy soil in late winter and spring than to low temperatures. Plant in fast-draining soil, on raised beds or mounds, and keep the crown out of standing water.

NC State: English lavender

04Test your soil before you amend it

Lavender prefers neutral to slightly alkaline soil, around pH 6.5 to 8. A soil map is a starting point, but only a test of your own planting area tells you whether lime is needed. Your county extension office can point you to an affordable soil test.

05English lavender or lavandin?

English lavender (Lavandula angustifolia) cultivars such as Hidcote and Munstead are generally the most cold-hardy. Lavandins (Lavandula × intermedia), such as Phenomenal and Grosso, grow larger and are prized for oil and bundles. Hardiness varies by cultivar, so check each plant's listed range.

06When to plant in Michigan

Plant in spring once the soil can be worked and hard freezes are past, so roots can establish before winter. Plants set out late in the season go into winter with small root systems and are more likely to heave out of the ground or rot.

Penn State: Lavender production

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