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.

In Alpharetta you can estimate when it's possible to plant alstromeria by looking at the USDA zone info.

Planting Calendar for Alstromeria

Frost tolerance for alstromeria:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Alstromeria are moderately cold tolerant which means that you can plant them a little bit earlier than plants that are more sensitive to the cold.

The earliest that you can plant alstromeria in Alpharetta 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 alstromeria and expect a good harvest is probably September. Any later than that and your alstromeria may not have a chance to really do well. You can get started a couple of weeks earlier by starting your alstromeria indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Alpharetta. You can expect an average low temperature of 5°F in the coldest months of winter.

Remember that USDA zone info for Alpharetta is an average and the actual date of last frost is different every year. Half of the time in Alpharetta there is a last frost after April 15 so make sure that you are prepared to protect your alstromeria in the event of a surprise late frost.

USDA Zone Info for Alpharetta

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Alpharetta

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