When to Plant Ageratum in Enumclaw, WA

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 first opportunity to plant ageratum in Enumclaw can be figured out by looking at the USDA zone info.


Planting Calendar for Ageratum

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

Ageratum do not do well in cold weather which means that you need to wait until it warms up after all chance of frost has passed before you can plant them.

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

The earliest that you can plant ageratum in Enumclaw 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 ageratum and expect a good harvest is probably August. You probably don't want to wait any later than that or else your ageratum may not have a chance to grow to maturity. If you are starting your ageratum 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 Enumclaw. You can expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Enumclaw is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Enumclaw there is a last frost after April 15 be ready to protect your ageratum if you have one of those late frosts.

USDA Zone Info for Enumclaw

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low5°F
Highest Expected Low10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Enumclaw

You may be interested in your other planting guides for Enumclaw.