Tickseed · Renca, Santiago Metropolitan, Chile
When to sow tickseeds in Renca
Main outdoor window
21 Sep - 19 Oct
The window this page is built around.
Timed from last spring frost
14 September
In Renca, on your chosen risk.
Ready to pick
29 Nov - 30 Mar
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 Renca
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
9 Nov - 7 Dec
Eight weeks before your last frost, under cover or on a windowsill.
Sow direct
21 Sep - 19 Oct
One week after your last frost.
Plant out
28 Sep - 26 Oct
Two weeks after your last frost.
In flower
29 Nov - 30 Mar
Tickseeds through the year
Against the frost risk in Renca
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 Renca.
Renca 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.
Also in Renca
Other flowers to time
Growing tickseeds in Renca
When should I plant tickseeds in Renca?
Aim for 21 Sep - 19 Oct in an average year. If you would rather not gamble on the weather, wait until 12 Oct - 9 Nov - by then frost has finished in nine years out of ten.
When will tickseeds be ready to harvest in Renca?
Expect to start picking around 29 Nov - 30 Mar, 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.