When to Plant Chrysanthemum in Cornelius, OR

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

It's possible to determine when it's possible to plant chrysanthemum by looking at the USDA zone info for Cornelius.


Planting Calendar for Chrysanthemum

Frost tolerance for chrysanthemum: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

It's not a good idea to plant chrysanthemum until after the last frost when the weather gets warmer because they require warm weather.

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

The earliest that you can plant chrysanthemum in Cornelius 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 chrysanthemum and expect a good harvest is probably August. Any later than that and your chrysanthemum may not have a chance to really do well. You can get started a couple of weeks earlier by starting your chrysanthemum indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Cornelius. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Cornelius may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Cornelius last frost occurs after March 15 so just be sure to be ready to protect your chrysanthemum if you have a surprise late frost.

USDA Zone Info for Cornelius

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 Cornelius

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