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USDA Plant Hardiness Zones

To help gardeners understand which plants will grow well for them, the entire USA has been segmented into ‘Plant Hardiness Zones’. Knowing your zone number is helpful when shopping for plants because:

  • Cold-area gardeners can avoid buying plants that simply won’t survive their lowest winter temperatures.
  • Warm-area gardeners can steer clear of plants that need a period of cold weather in order to bloom again.
Find your Plant Hardiness Zone here.

Soil Thermometer

Soil Thermometer

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Most orders ship within 48 hours or less. Learn More…

Monitor soil temperatures for healthy seeding, planting and gardening with this Soil Thermometer. Keep your plants healthy and give your seedlings the best environment for growth by planting at the safe and proper soil temperature. The weather-resistant, 7” stainless-steel stem is perfect for temperature readings for indoor potting or outdoor gardening.


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This accurate Soil Thermometer includes a protective sheath with a pocket clip to ensure long-lasting quality. It will measure temperatures from 0 – 220 degrees Fahrenheit. The 7” stem is comprised of stainless-steel, making it easy to clean.
Ships to Hawaii, Alaska & Canada Yes

How To Use

At ACURITE, we know life moves pretty fast. That’s why we design our products to clearly display time, temperature, and weather, so you can get the information you want at a glance and keep moving.

Easy to read 1 3/4"
Dial Shatterproof Plastic Crystal Lens
7" Stainless Steel Probe

Directions: For accurate temperature measurement, insert probe at least 2” into soil. Leave for 1 minute or more.

Recalibration: To check your thermometer for accuracy, immerse probe 2” in a liquid of known temperature. Without removing probe, grip the adjusting nut with suitable tool and rotate thermometer to correct the error. Allow a minimum of 30 seconds before re-adjusting.


Most orders ship within 48 hours or less.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Orders for in-season products ship within 48 hours or less. Depending upon your order date, we may hold your shipment to combine it with other products on your order, if applicable. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

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Q & A

Plant With These:

USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

Find Your Planting Zone:

Enter your Zip Code to find your USDA Planting Zone

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