When to Plant Coral Bells in Milton, WI

One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Milton it's possible to estimate when it's a good idea to plant coral bells.

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Planting Calendar for Coral Bells

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

You can plant coral bells just a bit earlier in the year because they do well in moderate cold.

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

The earliest that you can plant coral bells in Milton 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 coral bells and expect a good harvest is probably September. You probably don't want to wait any later than that or else your coral bells may not have a chance to really do well. Starting your coral bells indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Milton. In the coldest months of winter you can expect an average low temperature of -20°F.

Keep in mind that USDA zone info for Milton is not always accurate and the actual date of last frost is different every year. Since half of the time in Milton last frost occurs after April 15 be ready to cover your coral bells if you have one of those late frosts.

USDA Zone Info for Milton

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-20°F
Highest Expected Low-15°F

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

Plants to Grow in Milton

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