
Chestnuts are incredibly versatile, which is why so many of us love gathering them every year. For families with kids, it’s practically a mandatory fall ritual! In this post, I’m going to break down exactly when you should head out on your chestnut hunt.
When is harvest time?
Since there are quite a few different varieties of chestnuts out there, there isn’t one single “magic date” for the harvest. Generally speaking, though, it’s always a fall activity. For some varieties, you can start filling your pockets as early as September, while others might keep you waiting until the end of October. As you can see, the timing varies quite a bit and depends a lot on the local weather.
Dealing with pests and crop loss
Unfortunately, chestnut trees can be a bit sensitive to pests and diseases. While the larvae of the horse chestnut leaf miner mostly go after the leaves, the chestnut weevil is the one that targets the actual fruit. These beetles lay their eggs on the chestnuts, and the larvae then eat them from the inside out—which can really ruin a harvest. A good rule of thumb: if you see chestnuts that have fallen off the tree unusually early, it’s best to leave those behind.
How to use your chestnuts
Of course, the first thing most of us think of is food! In places like Ticino, Switzerland, these tasty nuts are actually a dietary staple. However, a quick reminder: only Sweet Chestnuts (Marroni) are edible. Horse Chestnuts are toxic and definitely shouldn’t be eaten, though they are perfect for fall crafts and home decor. You’ll also often find horse chestnut extract as a key ingredient in herbal remedies.
Chestnut harvest: The quick facts
- There isn’t one fixed harvest date for all trees.
- Timing depends on the specific variety and the weather.
- Harvest season always falls in autumn, usually between September and late October.
- Only Sweet Chestnuts or Marroni are safe to eat.
- Horse Chestnuts are toxic but great for crafting.
- Watch out for the chestnut weevil, which is the main cause of crop loss.
- By the way, if you’ve got a green thumb, you can even grow your own chestnut tree!

