One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. 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 achillea in Lincolnshire can be determined by referring to the USDA zone info.

Planting Calendar for Achillea

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

Since achillea are one of those plants that can tolerate quite a bit of cold weather you can plant them earlier in the year than other frost tender plants.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Lincolnshire. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Lincolnshire may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Lincolnshire you get a frost after April 15 be ready to protect your achillea in the event of one of those late frosts.

USDA Zone Info for Lincolnshire

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 Lincolnshire

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