Zinnia · Algiers, Algiers, Algeria
When to sow zinnias in Algiers
Main outdoor window
8-22 Feb
The window this page is built around.
Timed from last spring frost
1 February
In Algiers, on your chosen risk.
Ready to pick
9-29 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 Algiers
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
4-18 Jan
Four weeks before your last frost, under cover or on a windowsill.
Sow direct
8-22 Feb
One week after your last frost.
Plant out
8-22 Feb
One week after your last frost.
In flower
9-29 Apr
Zinnias through the year
Against the frost risk in Algiers
Why these dates
Direct sowing after last frost usually beats transplanting - zinnias dislike root disturbance and catch up quickly.
Killed by the first frost at either end of the season. Strictly a warm-season flower.
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. Zinnias are timed from 4 weeks before that frost for an indoor start, with planting out 1 weeks after it, and this page simply resolves those offsets against the frost date computed for Algiers.
Also in Algiers
Other flowers to time
Growing zinnias in Algiers
When should I plant zinnias in Algiers?
Aim for 8-22 Feb in an average year. If you would rather not gamble on the weather, wait until 11-25 Feb - by then frost has finished in nine years out of ten.
When will zinnias be ready to harvest in Algiers?
Expect to start picking around 9-29 Apr, based on 60 to 80 days to maturity from the planting date calculated for this location.
How much frost will zinnias tolerate?
Killed by the first frost at either end of the season. Strictly a warm-season flower.