One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to determine when it's the best time to plant ageratum by reviewing the USDA zone info for Alachua.

Planting Calendar for Ageratum

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

Since ageratum do not do well in cold weather it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant ageratum in Alachua 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 ageratum and expect a good harvest is probably August. If you wait any later than that and your ageratum may not have a chance to grow to maturity. If you are starting your ageratum indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Alachua. You should expect an average low temperature of 15°F in the coldest months of winter.

Remember that USDA zone info for Alachua is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Alachua you get a frost after March 15 be ready to cover your ageratum if you have a late frost.

USDA Zone Info for Alachua

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Alachua

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