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.

The first opportunity to plant polka dot plant in Tempe can be determined by using the USDA zone info.

Planting Calendar for Polka Dot Plant

Frost tolerance for polka dot plant:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant polka dot plant until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant polka dot plant in Tempe 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 polka dot plant and expect a good harvest is probably September. You probably don't want to wait any later than that or else your polka dot plant may not have a chance to really do well. If you are starting your polka dot plant indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Tempe may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Tempe last frost occurs after February 15 be ready to cover your polka dot plant in the event of one of those late frosts.

USDA Zone Info for Tempe

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 Tempe

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