One of the best tools that you have as gardeners to help us determine 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 you can plant begonias by looking at the USDA zone info for Lowell.

Planting Calendar for Begonias

Frost tolerance for begonias:	Not tolerant of frost.
When to plant:	After the last frost.

Begonias are not cold tolerant which tells us that you need to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant begonias in Lowell 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 begonias and expect a good harvest is probably August. You probably don't want to wait any later than that or else your begonias may not have a chance to grow to maturity. Starting your begonias indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Lowell. In the coldest months of winter you should expect an average low temperature of -5°F.

It's important to remember that USDA zone info for Lowell is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Lowell it frosts late in the year after April 15 so make sure that you are prepared to cover your begonias in the event of a surprise late frost.

USDA Zone Info for Lowell

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 Lowell

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