Since the Sensitive Plant (Mimosa pudica) is a tropical native, most of us here in the States treat it as an annual houseplant because overwintering it can be a real headache. That said, if you give it the right TLC, it can put on a pretty impressive show! Here’s the lowdown on how these unique plants grow and how to keep yours happy.
Mimosa Plants Are Actually Perennials
Technically, mimosas are perennials. However, because overwintering them is so tricky and rarely successful indoors, most gardeners just grow them as annuals. Honestly, it’s usually much easier to start fresh with a new seedling in the spring rather than stressing over a plant that might not make it through the winter.
The Growth Habit of the Sensitive Plant
When grown as a houseplant, a mimosa usually stays pretty compact, reaching about 12 to 20 inches in height. The main stem is often bare or slightly bristly, with just a few branches and the occasional thorn.
You might notice that even in their first year, mimosas can start to look a bit “leggy” or awkward. If you do manage to keep one going for several years, they tend to lose that tidy look and can start appearing a bit unkempt over time.
Essentials for Healthy Growth
If you want your mimosa to look its absolute best during its lifespan, you really need to focus on two things:
- Finding the perfect spot
- Nailing the care routine
The Best Location for Your Mimosa
Your mimosa’s home should be bright, but you’ll want to avoid harsh, direct sunlight. An east- or west-facing window is usually the “sweet spot.” These plants love consistency, so aim for warm temperatures between 65°F and 72°F and try to keep the humidity high—ideally around 50% to 60%.
If the weather is warm enough in the summer, your mimosa will love a little vacation outside on the balcony or patio!
Proper Care Tips
Mimosas are thirsty little plants. You’ll want to keep the root ball consistently moist, but be careful not to let it sit in water—nobody likes soggy feet!
One big “don’t”: avoid the pruning shears. Regular pruning isn’t just unnecessary; it can actually kill the plant. Mimosas are incredibly sensitive to being cut back and don’t handle it well at all.
Can You Grow Mimosa as a Bonsai?
Because of their naturally leggy growth habit and the fact that they hate being pruned, mimosas aren’t the best candidates for bonsai styling. It’s definitely a challenge even for experienced growers!
