When to Plant Astilbe in Oak Grove, KY

The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to figure out when it's a good idea to plant astilbe by looking at the USDA zone info for Oak Grove.


Planting Calendar for Astilbe

Frost tolerance for astilbe: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Since astilbe are barely cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

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

The earliest that you can plant astilbe in Oak Grove is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant astilbe and expect a good harvest is probably August. If you wait any later than that and your astilbe may not have a chance to really do well. You can get started a few weeks earlier by starting your astilbe indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Oak Grove. You should expect an average low temperature of 0°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Oak Grove is an average and the actual date of last frost will vary from year to year. Since half of the time in Oak Grove last frost occurs after April 15 be ready to cover your astilbe in the event of a surprise late frost.

USDA Zone Info for Oak Grove

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low0°F
Highest Expected Low5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Oak Grove

You may be interested in your other planting guides for Oak Grove.