Safe to Plant

Tickseed · Gustavo Adolfo Madero, Mexico City, Mexico

When to sow tickseeds in Gustavo Adolfo Madero

Main outdoor window

16 Feb - 16 Mar

The window this page is built around.

Timed from last spring frost

9 February

In Gustavo Adolfo Madero, on your chosen risk.

Ready to pick

1 Jun - 30 Sep

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 Gustavo Adolfo Madero

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.

Start indoors

6 Apr - 4 May

Eight weeks before your last frost, under cover or on a windowsill.

Sow direct

16 Feb - 16 Mar

One week after your last frost.

Plant out

23 Feb - 23 Mar

Two weeks after your last frost.

In flower

1 Jun - 30 Sep

Frost tolerance
Hardy
Damaged below
-25°C (-13°F)
First crop
Year 1
Hardy to
Zone 4a–9a
Min soil temp
12°C (53.6°F)
Spacing
40 cm
Sowing depth
5 mm (0.2 in)
Sun
Full

Tickseeds through the year

Against the frost risk in Gustavo Adolfo Madero

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

Frost risk Start indoors Sow direct Plant Harvest Today

Why these dates

Plant out or sow direct after the last frost. Shear the plant back by half when flowering slows in midsummer for a second flush that lasts to autumn. Deadheading is what keeps it going, so a neglected plant simply stops.

Hardy to -25C, though the large-flowered forms often behave as biennials in a wet winter and are worth resowing. Needs good drainage.

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. Tickseeds are timed from 8 weeks before that frost for an indoor start, with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Gustavo Adolfo Madero.

Gustavo Adolfo Madero sits in zone 9b, 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 Gustavo Adolfo Madero →

Growing tickseeds in Gustavo Adolfo Madero

When should I plant tickseeds in Gustavo Adolfo Madero?

Aim for 16 Feb - 16 Mar in an average year. If you would rather not gamble on the weather, wait until 13 Mar - 10 Apr - by then frost has finished in nine years out of ten.

When will tickseeds be ready to harvest in Gustavo Adolfo Madero?

Expect to start picking around 1 Jun - 30 Sep, based on 90 to 120 days to maturity from the planting date calculated for this location.

How much frost will tickseeds tolerate?

Hardy to -25C, though the large-flowered forms often behave as biennials in a wet winter and are worth resowing. Needs good drainage.