When to plant Walnut trees
Calendar windows
Dates shift with your latitude โ they are calculated from your local last-spring-frost date, not from a fixed calendar.
At a glance
Overwinters outdoors in a temperate garden.
Practical notes
Plant it where you want it forever and nowhere near the vegetable garden โ walnut roots release juglone, which poisons tomatoes, potatoes and apples within the drip line. Grafted trees crop in five years, seedlings in fifteen.
Knowing when to pick
Gather from the ground daily once the green husks split โ nuts left lying go mouldy and stain black within a couple of days of rain.
Storing the crop
Husk, wash and dry for two to three weeks somewhere airy until a kernel snaps rather than bends. In shell they keep a year in a cool room.
Crop rotation
No strict rotation group โ still avoid replanting into the same soil year after year.
Keep apart from
Watch for
Full guide: walnut trees diseases and pests (3) โ with spread routes, compost verdicts and the prevention this list justifies.