Redcurrant · Suwon, Gyeonggi-do, South Korea
When to plant redcurrants in Suwon
Main outdoor window
12 Nov - 20 Mar
The window this page is built around.
Timed from last spring frost
3 April
In Suwon, on your chosen risk.
Ready to pick
1-31 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 Suwon
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.
Plant the bush
12 Nov - 20 Mar
Any time the plant is dormant and the ground is neither frozen nor waterlogged: after leaf fall in autumn, or at the end of winter before growth restarts.
Harvest
1-31 Jul
Redcurrants through the year
Against the frost risk in Suwon
Why these dates
Very hardy, and one of the few fruits that crops usefully on a north-facing wall.
Redcurrants are planted once and then left in place, so there is no sowing offset to resolve. What matters in Suwon is the shape of the year: this crop is dormant through the winter and is planted while it sleeps, any time between leaf fall in autumn and the restart of growth in spring, so long as the ground is neither frozen nor waterlogged. That is why the window below spans the cold months rather than sitting in the middle of the growing season.
Hardiness is not the obstacle here. Suwon is zone 7a, comfortably inside the range this crop is rated for, so an established plant should come through an average winter without protection.
Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 2, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.
Also in Suwon
Other fruits to time
Growing redcurrants in Suwon
When should I plant redcurrants in Suwon?
Aim for 12 Nov - 20 Mar in an average year. If you would rather not gamble on the weather, wait until 31 Oct - 29 Mar - by then frost has finished in nine years out of ten.
When will redcurrants be ready to harvest in Suwon?
Expect to start picking around 1-31 Jul, based on 60 to 80 days to maturity from the planting date calculated for this location.
How much frost will redcurrants tolerate?
Very hardy, and one of the few fruits that crops usefully on a north-facing wall.