When to Plant Mimulus in Milton, WA

Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant mimulus in Milton should be determined by using the USDA zone info.


Planting Calendar for Mimulus

Frost tolerance for mimulus: Not tolerant of frost.
When to plant: After the last frost has passed.

Mimulus do not do well in cold weather which means that it is important to wait until it warms up after all chance of frost has passed before you can plant them.

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

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

Last Frost Date

On average the last frost has passed is on March 15 in Milton. It might get as low as 15°F during the coldest months of winter.

It's important to remember that USDA zone info for Milton is an average and the actual date of last frost is different every year. Since half of the time in Milton it frosts late in the year after March 15 be ready to cover your mimulus if you have one of those late frosts.

USDA Zone Info for Milton

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low15°F
Highest Expected Low20°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 20°F.

Plants to Grow in Milton

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