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 estimate when to plant marigold in Addison by using the USDA zone info.

Planting Calendar for Marigold

Frost tolerance for marigold:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You should not plant marigold until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant marigold in Addison is April. However, you really should wait until May if you don't want to take any chances.

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

Last Frost Date

In Addison the average date of last frost happens on March 15. In the coldest months of winter you should expect an average low temperature of 10°F.

Since the USDA zone info for Addison is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Addison there is a last frost after March 15 be ready to cover your marigold if you have a surprise late frost.

USDA Zone Info for Addison

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Addison

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