When can I plant Hollyhocks in Zone 1a

Before planting it is a good idea to find our USDA Zone info to determine our garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

In Zone 1a you can estimate when to plant hollyhocks by referring to the USDA zone info.


Planting Calendar for Hollyhocks

Frost tolerance for hollyhocks: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

Hollyhocks tend to make it in mild cold which means that you can plant them a little earlier in the year than plants that are more sensitive to the cold.

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

The earliest that you can plant hollyhocks in Zone 1a is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant hollyhocks and expect a good harvest is probably July. If you wait any later than that and your hollyhocks may not have a chance to grow to maturity. If you are starting your hollyhocks indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on June 15 in Zone 1a. We can expect an average low temperature of -60°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 1a is not always accurate and our actual date of last frost will vary from year to year. Half of the time in Zone 1a it frosts late in the year after June 15 so just be sure to be ready to cover your hollyhocks if we have a late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in our other planting guides for Zone 1a.