Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Schuylkill Haven you can determine when it's a good idea to plant alstromeria by reviewing 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 can survive in some cold which means that you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant alstromeria in Schuylkill Haven 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. You probably don't want to wait any later than that or else 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 the last frost has passed is on April 15 in Schuylkill Haven. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Schuylkill Haven is an average the actual date of last frost will vary from year to year. Since half of the time in Schuylkill Haven there is a last frost after April 15 be ready to cover your alstromeria in the event of a late frost.

USDA Zone Info for Schuylkill Haven

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Schuylkill Haven

You may be interested in your other planting guides for Schuylkill Haven.