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 way of getting a good idea when it's the best time to plant primroses is to use the USDA zone info for Mcallen.

Planting Calendar for Primroses

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

Primroses do well in cold which means that you can get them planted much earlier than other plants that might not handle the cold.

The earliest that you can plant primroses in Mcallen is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant primroses and expect a good harvest is probably October. Any later than that and your primroses may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your primroses indoors.

Last Frost Date

The average date of last frost is February 15 in Mcallen. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Mcallen is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Mcallen last frost occurs after February 15 so make sure that you are prepared to protect your primroses in the event of a surprise late frost.

USDA Zone Info for Mcallen

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Mcallen

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