frostdate name logo in white
frostdate name logo in white

When to Plant Hamburg root parsley 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 can be reffered to in order to estimate when it's a good idea to plant hamburg root parsley.

Create beautiful hand-made plants at forever-plants.com

Planting Calendar for Hamburg root parsley

Frost tolerance for hamburg root parsley: Tolerant of some frost.
When to plant: Up to 5 weeks before last frost.

Hamburg root parsley are one of those plants that can tolerate a little bit of cold weather which tells us that you can start planting them earlier than more sensitive plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant hamburg root parsley
Possibly ok, but a risky time to plant hamburg root parsley
Probably not a good time to plant hamburg root parsley

The earliest that you can plant hamburg root parsley 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 hamburg root parsley and expect a good harvest is probably September. Any later than that and your hamburg root parsley may not have a chance to really do well. You can get started a little bit earlier by starting your hamburg root parsley indoors.

Last Frost Date

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

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Castle Rock and it will vary from year to year. Since half of the time in Castle Rock last frost occurs after April 15 be ready to protect your hamburg root parsley if you have one of those late frosts.

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.