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 Grand Haven you can estimate when it's a good idea to plant monkey flower by checking out the USDA zone info.

Planting Calendar for Monkey Flower

Frost tolerance for monkey flower:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's not a good idea to plant monkey flower until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant monkey flower in Grand Haven 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 monkey flower and expect a good harvest is probably August. You probably don't want to wait any later than that or else your monkey flower may not have a chance to grow to maturity. If you are starting your monkey flower indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Grand Haven the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Grand Haven is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Grand Haven last frost occurs after April 15 be ready to cover your monkey flower in the event of a surprise late frost.

USDA Zone Info for Grand 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 Grand Haven

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