One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when to plant sweet peas in Surprise by looking at the USDA zone info.

Planting Calendar for Sweet Peas

Frost tolerance for sweet peas:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since sweet peas do ok in moderate cold you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant sweet peas in Surprise 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 sweet peas and expect a good harvest is probably September. If you wait any later than that and your sweet peas may not have a chance to grow to maturity. If you are starting your sweet peas indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on February 15 in Surprise. In the coldest months of winter you can expect an average low temperature of 25°F.

Just be sure to remember that USDA zone info for Surprise is an average and the actual date of last frost changes from year to year. Since half of the time in Surprise last frost occurs after February 15 be ready to protect your sweet peas if you have a late frost.

USDA Zone Info for Surprise

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 Surprise

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