Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when it's a good idea to plant gypsophila in Zone 1a by referring to the USDA zone info.

Planting Calendar for Gypsophila

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

Gypsophila are one of those plants that can tolerate a little bit of cold weather which tells us that you can plant them a little bit earlier than more sensitive plants.

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

Last Frost Date

The average date of last frost is June 15 in Zone 1a. It might get as low as -60°F during the coldest months of winter.

It's important to remember that USDA zone info for Zone 1a may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Zone 1a last frost occurs after June 15 so make sure that you are ready to cover your gypsophila if you 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 your other planting guides for Zone 1a.