One of the best tools that you have as gardeners to help us estimate 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.

By checking out the USDA zone info for Massena you will be able to estimate when it's a good idea 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 tend to make it in cold weather which tells us that you can plant them earlier in the year than other frost tender plants.

The earliest that you can plant larkspur in Massena 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 fully mature. You can get started a little bit earlier by starting your larkspur indoors.

Last Frost Date

In Massena the average date of last frost happens on May 15. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Massena is an average the actual date of last frost will vary from year to year. Since half of the time in Massena it frosts late in the year after May 15 be ready to cover your larkspur in the event of one of those late frosts.

USDA Zone Info for Massena

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Massena

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