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When to Plant Blue Throatwort in Rock Springs, WY

One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Rock Springs you will be able to figure out when it's possible to plant blue throatwort.


Planting Calendar for Blue Throatwort

Frost tolerance for blue throatwort: Not tolerant of frost.
When to plant: After the last frost has passed.

Since blue throatwort do not do well in cold weather it is important to wait until after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant blue throatwort
Possibly ok, but a risky time to plant blue throatwort
Probably not a good time to plant blue throatwort

The earliest that you can plant blue throatwort in Rock Springs is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant blue throatwort and expect a good harvest is probably August. You probably don't want to wait any later than that or else your blue throatwort may not have a chance to really do well. If you are starting your blue throatwort indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Rock Springs. You can expect an average low temperature of -20°F in the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Rock Springs and it can change quite a bit from year to year. Since half of the time in Rock Springs there is a last frost after April 15 be ready to protect your blue throatwort in the event of a late frost.

USDA Zone Info for Rock Springs

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-20°F
Highest Expected Low-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Rock Springs

You may be interested in your other planting guides for Rock Springs.