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soil temp for planting basil #751768

Asked May 24, 2021, 12:23 PM EDT

Is it too risky to plant basil plants that have been hardened off without checking soil temp this month? I am in 80304 zip code

Boulder County Colorado

Expert Response

Hello Pamela,

It's always best to check the soil temperature before planting.  Basil is in the category of VeryTender/Warm Season crops.

Here is a link to  the CSU Gardennotes : Vegetable Planting Guide


Without taking the soil temperature, there are a few guidelines.  The air temperature (Day and Night) should be above 60F.  Temperatures lower than 55F may stunt the plants.  Is the planting area in full sun? (will warm the soil quicker).  Normally one should wait 2+ weeks after last spring frost date.

Happy Gardening,
CO Master Gardener Team
720-1 . CMG GardenNotes #720 . Vegetable Planting Guide . Outline: Cool season vegetables, page 1 • Hardy vegetables – Broccoli, cabbage, kohlrabi, onions ...
cmg.extension.colostate.edu


From: Ask Extension <<personal data hidden>>
Sent: Monday, May 24, 2021 3:45 PM
To: Boulder County Parks Master Gardeners <<personal data hidden>>
Subject: Question assigned to you (#0021699)
 

Hi Boulder County,

Question #0021699 has been assigned to you by CSU E.

soil temp for planting basil

Is it too risky to plant basil plants that have been hardened off without checking soil temp this month? I am in 80304 zip code

From: pamela Lippe
Submitted: 05/24/2021 12:23 PM


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An Ask Extension Expert Replied May 25, 2021, 12:20 PM EDT
Thank You for such a quick response.  I did look at the CSU garden notes link that you sent me, but basil was not on their list.
Next year I will get a thermometer before  plant them.  My basil and peppers just went in the ground yesterday…Ooops!  Evening temps around 60, but not sure if it dropped after 9pm?

Thanks again!
Pamela Lippe
Team Lead
Windhorse Elder Care
Boulder, CO

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On May 25, 2021, at 10:20 AM, Ask Extension <<personal data hidden>> wrote:

The Question Asker Replied May 25, 2021, 5:00 PM EDT

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