frostdate name logo in white
frostdate name logo in white

When to Plant Chrysanthemums in Forest Grove, OR

One of the first steps you take when you are determining 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.

The USDA zone info for Forest Grove can be reffered to in order to figure out when it's possible to plant chrysanthemums.


Planting Calendar for Chrysanthemums

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

Chrysanthemums tend to make it in a tiny bit of cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant chrysanthemums in Forest 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 chrysanthemums and expect a good harvest is probably August. You probably don't want to wait any later than that or else your chrysanthemums may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your chrysanthemums indoors.

Last Frost Date

On average the last frost is on March 15 in Forest Grove. In the coldest months of winter you can expect an average low temperature of 15°F.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Forest Grove and it can change quite a bit from year to year. Since half of the time in Forest Grove last frost occurs after March 15 be ready to protect your chrysanthemums if you have one of those late frosts.

USDA Zone Info for Forest Grove

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low15°F
Highest Expected Low20°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 20°F.

Plants to Grow in Forest Grove

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