Parsley · Celaya, Guanajuato, Mexico
When to plant parsley in Celaya
Main outdoor window
14 Jan - 4 Feb
The window this page is built around.
Timed from last spring frost
28 January
In Celaya, on your chosen risk.
Ready to pick
25 Mar - 14 Apr
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 Celaya
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
3-24 Dec
Eight weeks before your last frost, under cover or on a windowsill.
Sow for overwintering
2-23 Aug
Counting back 104 days from your first frost so the crop matures in time.
Sow direct
14 Jan - 4 Feb
Two weeks before your last frost.
Plant out
14 Jan - 4 Feb
Two weeks before your last frost.
Harvest
25 Mar - 14 Apr
Parsley through the year
Against the frost risk in Celaya
Why these dates
Germination takes three to four weeks. Sow indoors eight weeks before last frost or direct once soil warms; either way, patience is required.
Survives -10C and often overwinters to produce an early spring crop before running to seed in its second year.
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. Parsley are timed from 8 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 Celaya.
The median frost-free season here is 311 days, against 70 to 90 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Nearby
Parsley in places close by
Growing parsley in Celaya
When should I plant parsley in Celaya?
Aim for 14 Jan - 4 Feb in an average year. If you would rather not gamble on the weather, wait until 4-25 Feb - by then frost has finished in nine years out of ten.
When will parsley be ready to harvest in Celaya?
Expect to start picking around 25 Mar - 14 Apr, based on 70 to 90 days to maturity from the planting date calculated for this location.
How much frost will parsley tolerate?
Survives -10C and often overwinters to produce an early spring crop before running to seed in its second year.