Sweet cherry · Juliaca, Puno, Peru
When to plant sweet cherries in Juliaca
Main outdoor window
26 Apr - 29 Sep
The window this page is built around.
Timed from last spring frost
13 October
In Juliaca, on your chosen risk.
Ready to pick
29 Nov - 28 Jan
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 Juliaca
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 tree
26 Apr - 29 Sep
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
29 Nov - 28 Jan
Sweet cherries through the year
Against the frost risk in Juliaca
Why these dates
Plant dormant. Prune in summer rather than winter - cherries and their relatives are prone to silver leaf and bacterial canker, and both infect through winter pruning cuts. Netting has to go on before the fruit colours, not after.
Hardy in wood, vulnerable in flower, and the high chill requirement means sweet cherries simply will not fruit reliably in a mild-winter climate no matter how well they are treated.
Sweet cherries are planted once and then left in place, so there is no sowing offset to resolve. What matters in Juliaca 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.
Juliaca sits in zone 9a, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.
Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 4, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.
Also in Juliaca
Other fruits to time
Growing sweet cherries in Juliaca
When should I plant sweet cherries in Juliaca?
Aim for 26 Apr - 29 Sep in an average year. If you would rather not gamble on the weather, wait until 28 Mar - 8 Nov - by then frost has finished in nine years out of ten.
When will sweet cherries be ready to harvest in Juliaca?
Expect to start picking around 29 Nov - 28 Jan, based on 60 to 80 days to maturity from the planting date calculated for this location.
How much frost will sweet cherries tolerate?
Hardy in wood, vulnerable in flower, and the high chill requirement means sweet cherries simply will not fruit reliably in a mild-winter climate no matter how well they are treated.