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When to Plant Aegopodium in Castle Rock, CO

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

The USDA zone info for Castle Rock should be reffered to in order to estimate when you can plant aegopodium.

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Planting Calendar for Aegopodium

Frost tolerance for aegopodium: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

Since aegopodium are one of those plants that can tolerate quite a bit of cold weather you can plant them quite a bit earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant aegopodium in Castle Rock is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant aegopodium and expect a good harvest is probably September. If you wait any later than that and your aegopodium may not have a chance to really do well. If you are starting your aegopodium indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Castle Rock. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Castle Rock may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Castle Rock you get surprised by a frost after April 15 so make sure that you are prepared to protect your aegopodium in the event of a late frost.

USDA Zone Info for Castle Rock

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-15°F
Highest Expected Low-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Castle Rock

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