The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of determining when to plant primula is to examine the USDA zone info for Clifton Heights.

Planting Calendar for Primula

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

You can plant primula a lot earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

The earliest that you can plant primula in Clifton Heights 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 primula and expect a good harvest is probably September. If you wait any later than that and your primula may not have a chance to fully mature. You can get started a few weeks earlier by starting your primula indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Clifton Heights. You should expect an average low temperature of 0°F in the coldest months of winter.

Keep in mind that USDA zone info for Clifton Heights 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 Clifton Heights it frosts late in the year after April 15 so make sure that you are prepared to cover your primula in the event of a late frost.

USDA Zone Info for Clifton Heights

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Clifton Heights

You may be interested in your other planting guides for Clifton Heights.