Nasturtium · Kharkiv, Kharkiv, Ukraine
When to sow nasturtiums in Kharkiv
Main outdoor window
1-15 May
The window this page is built around.
Timed from last spring frost
24 April
In Kharkiv, on your chosen risk.
Ready to pick
20 Jun - 5 Jul
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 Kharkiv
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.
Sow direct
1-15 May
One week after your last frost.
In flower
20 Jun - 5 Jul
Nasturtiums through the year
Against the frost risk in Kharkiv
Why these dates
Direct sow after last frost. The large seed germinates readily and transplanting is unnecessary.
Frost-tender throughout. Often the first plant in the garden to signal that a frost occurred overnight.
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. Nasturtiums are timed for direct sowing 1 weeks after it, and this page simply resolves those offsets against the frost date computed for Kharkiv.
The median frost-free season here is 174 days, against 50 to 65 days to first flower for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Kharkiv
Other flowers to time
Growing nasturtiums in Kharkiv
When should I plant nasturtiums in Kharkiv?
Aim for 1-15 May in an average year. If you would rather not gamble on the weather, wait until 9-23 May - by then frost has finished in nine years out of ten.
When will nasturtiums be ready to harvest in Kharkiv?
Expect to start picking around 20 Jun - 5 Jul, based on 50 to 65 days to maturity from the planting date calculated for this location.
How much frost will nasturtiums tolerate?
Frost-tender throughout. Often the first plant in the garden to signal that a frost occurred overnight.