Collards · Sonīpat, Haryana, India
When to plant collards in Sonīpat
Main outdoor window
23 Dec - 21 Jan
The window this page is built around.
Timed from last spring frost
7 January
In Sonīpat, on your chosen risk.
Ready to pick
1 Sep - 31 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 Sonīpat
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
25 Nov - 23 Dec
Six weeks before your last frost, under cover or on a windowsill.
Sow direct
23 Dec - 21 Jan
Two weeks before your last frost.
Transplant
23 Dec - 21 Jan
Two weeks before your last frost.
Harvest
1 Sep - 31 Mar
Collards through the year
Against the frost risk in Sonīpat
Why these dates
Sow in spring for summer picking or, better, twelve weeks before the first autumn frost for leaves through winter. Pick the lower leaves and the plant keeps rising.
Survives about -10C and sweetens sharply once night temperatures drop below freezing, which is why southern growers treat frost as the start of the season rather than the end.
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. Collards are timed from 6 weeks before that frost for an indoor start, with planting out 2 weeks before it, and this page simply resolves those offsets against the frost date computed for Sonīpat.
Also in Sonīpat
Other vegetables to time
Growing collards in Sonīpat
When should I plant collards in Sonīpat?
Aim for 23 Dec - 21 Jan in an average year. If you would rather not gamble on the weather, wait until 24 Dec - 21 Jan - by then frost has finished in nine years out of ten.
When will collards be ready to harvest in Sonīpat?
Expect to start picking around 1 Sep - 31 Mar, based on 55 to 75 days to maturity from the planting date calculated for this location.
How much frost will collards tolerate?
Survives about -10C and sweetens sharply once night temperatures drop below freezing, which is why southern growers treat frost as the start of the season rather than the end.