The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By referring to the USDA zone info for Morris you will be able to determine when to plant larkspur.

Planting Calendar for Larkspur

Frost tolerance for larkspur:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Larkspur do well in a bit of cold which means that you can plant them much earlier in the year than other plants that might not handle the cold.

The earliest that you can plant larkspur in Morris 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 larkspur and expect a good harvest is probably August. Any later than that and your larkspur may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your larkspur indoors.

Last Frost Date

On average the last frost is on May 15 in Morris. You can expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Morris may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Morris there is a last frost after May 15 be ready to cover your larkspur in the event of a late frost.

USDA Zone Info for Morris

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Morris

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