One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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 figure out when you can plant common hollyhock by referring to the USDA zone info.

Planting Calendar for Common hollyhock

Frost tolerance for common hollyhock:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant common hollyhock a little bit earlier in the year because they do well in moderate cold.

The earliest that you can plant common hollyhock in Lynden 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 common hollyhock and expect a good harvest is probably September. Any later than that and your common hollyhock may not have a chance to grow to maturity. You can get started a little bit earlier by starting your common hollyhock indoors.

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 is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Lynden last frost occurs after March 15 so make sure that you are prepared to cover your common hollyhock if you have a 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.