When to Plant Violas in Hamilton, MT

The USDA Zone info is a great tool for gardeners to help us figure out 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.

The first chance to plant violas in Hamilton can be figured out by checking out the USDA zone info.

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Planting Calendar for Violas

Frost tolerance for violas: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

Violas can survive in cold weather which means that you can plant them much earlier in the year than other plants that might not handle the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant violas
Possibly ok, but a risky time to plant violas
Probably not a good time to plant violas

The earliest that you can plant violas in Hamilton 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 violas and expect a good harvest is probably September. You probably don't want to wait any later than that or else your violas may not have a chance to really do well. You can get started a couple of weeks earlier by starting your violas indoors.

Last Frost Date

The average date of last frost is April 15 in Hamilton. You should expect an average low temperature of -15°F in the coldest months of winter.

Remember that USDA zone info for Hamilton is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Hamilton last frost occurs after April 15 so just be sure to be ready to cover your violas if you have one of those late frosts.

USDA Zone Info for Hamilton

Here is the info for USDA Zone 5b.

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

Plants to Grow in Hamilton

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