Did you know that your Physalis (also known as Cape Gooseberry or Ground Cherry) is actually a perennial? Most people treat them like annuals, but you can totally overwinter them! After a few years, the base of the plant starts to get woody, and with a little consistent pruning, you can actually train your Physalis into a beautiful little tree.
Growing in Containers
If you’re dreaming of a Physalis tree, your best bet is to grow it in a pot. This makes it way easier to move indoors when the weather turns chilly.
Here are a few tips for successful container growing:
- Choose a pot that is at least twice the size of the root ball.
- Use a layer of expanded clay pebbles at the bottom for drainage.
- Use nutrient-rich, well-draining potting soil.
- Repot your plant at least every three years.
I recommend picking a variety with a more compact growth habit for container life. Depending on the variety, Physalis can reach anywhere from 1.5 to 6 feet tall. They tend to grow like crazy in those first few years until they hit their max height.
Overwintering Your Physalis
Keep in mind that Physalis is not frost-hardy. You’ll need to bring it inside before the first frost hits. The perfect winter home is a south-facing spot with plenty of light. Try to keep the temperature steady at around 50°F (10°C).
Pruning Your Physalis
Naturally, these plants like to grow into a bushy shrub. To get that tree look, you’ll need to prune your Physalis regularly. Start with a young plant and pick one strong, sturdy main shoot to become your “trunk.”
Regularly pinch off any side shoots, leaving only the branches at the very top to form the canopy. Aim for a small, compact crown and trim back any wild branches that stick out. Also, give the whole plant a good “haircut” before moving it in for the winter by cutting the branches back by about a third.
One last tip: always snip off any dead wood or leaves. Physalis can be prone to rot and mold, which usually starts on those dead bits, so keeping the plant clean is key to keeping it healthy!
