One of the first steps you take when you are getting a good idea 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.

In Morris you can determine when it's the best time to plant gladiolus by using the USDA zone info.

Planting Calendar for Gladiolus

Frost tolerance for gladiolus:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since gladiolus are barely cold tolerant you can plant them just a tiny bit earlier in the year than other frost tender plants.

The earliest that you can plant gladiolus in Morris is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant gladiolus and expect a good harvest is probably August. If you wait any later than that and your gladiolus may not have a chance to really do well. You can get started a few weeks earlier by starting your gladiolus indoors.

Last Frost Date

On average the last frost is on April 15 in Morris. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Morris is an average the actual date of last frost will vary from year to year. Since half of the time in Morris there is a last frost after April 15 be ready to protect your gladiolus in the event of a late frost.

USDA Zone Info for Morris

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 Morris

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