Safe to Plant

Michaelmas daisy · Dongguan, Guangdong, China

When to sow michaelmas daisies in Dongguan

Main outdoor window

1 Feb - 1 Mar

The window this page is built around.

Timed from last spring frost

18 January

In Dongguan, on your chosen risk.

Ready to pick

1 Sep - 31 Oct

If you plant at the start of the window.

The average last frost. Half of all years are later than this.

Step by step in Dongguan

Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.

Plant out

1 Feb - 1 Mar

Two weeks after your last frost.

In flower

1 Sep - 31 Oct

Frost tolerance
Very-hardy
Damaged below
-30°C (-22°F)
First crop
Year 1
Hardy to
Zone 4a–8b
Spacing
45 cm
Sowing depth
10 mm (0.4 in)
Sun
Full

Michaelmas daisies through the year

Against the frost risk in Dongguan

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Frost risk Plant Harvest Today

Why these dates

Plant out in spring. Pinch the shoots back by a third in early summer to keep a 1.2m plant self-supporting rather than staked. Divide every two or three years, because clumps run outward and die out in the middle.

Hardy to -30C. Mildew in a dry summer is the usual complaint, not winter damage; keeping the roots moist prevents most of it.

Seed packets and extension guides express timing as weeks either side of the last spring frost, because that is the only reference point that travels. Michaelmas daisies are timed with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Dongguan.

Dongguan sits in zone 10a, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.

Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 1, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.

See every crop timed for Dongguan →

Growing michaelmas daisies in Dongguan

When should I plant michaelmas daisies in Dongguan?

Aim for 1 Feb - 1 Mar in an average year. If you would rather not gamble on the weather, wait until 7 Feb - 7 Mar - by then frost has finished in nine years out of ten.

When will michaelmas daisies be ready to harvest in Dongguan?

Expect to start picking around 1 Sep - 31 Oct, based on 140 to 170 days to maturity from the planting date calculated for this location.

How much frost will michaelmas daisies tolerate?

Hardy to -30C. Mildew in a dry summer is the usual complaint, not winter damage; keeping the roots moist prevents most of it.