One of the first steps you take when you are making a decision about 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.

In Lynden you can estimate when it's a good idea to plant cuphea by using the USDA zone info.

Planting Calendar for Cuphea

Frost tolerance for cuphea:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since cuphea require warm weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant cuphea in Lynden 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 cuphea and expect a good harvest is probably August. If you wait any later than that and your cuphea may not have a chance to fully mature. If you are starting your cuphea 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 March 15 in Lynden. You should expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Lynden may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Lynden you get a frost after March 15 so be sure to be ready to protect your cuphea if you have a surprise late frost.

USDA Zone Info for Lynden

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

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

Plants to Grow in Lynden

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