Can I grow bananas indoors?
Written by
Julia Anderson
Reviewed by
Prof. Martin Thorne, Ph.D.Although it might not seem possible, it is possible to grow bananas *indoors* using a dwarf variety. My Dwarf Cavendish grew to give bananas in just 16 months while growing in a 25-gallon pot next to a south window. The most critical components of success are 12 or more hours of light daily, 60 degrees Fahrenheit, or warmer, and effective pruning techniques. Yes, you can put a banana in your *urban jungle*.
Pot Specifications
- 25-gallon containers minimum for root space
- Drainage holes + 2-inch gravel base to prevent rot
- Use light-colored pots to reflect heat
- Rotate 90° weekly for even sun exposure
Light Management
- Full-spectrum LED grow lights supplement winter sun
- 14 hours daily light triggers flowering
- Keep 6 inches from leaves to prevent burn
- Use timers for consistent daily cycles
A soil mix is the key to success indoors. My mix is 40% compost, 30% coco coir, and 30% perlite for drainage. Most of my plants stalled until I added worm castings, their microbial communities increased growth by 200%. To test the moisture level worth your plant, insert a chopstick into the soil. If that chopstick comes out slick and smeared with soggy soil, then root death is imminent.
Humidity & Heat
- Pebble trays add 20% humidity
- Use seedling heat mats below 65°F
- Group plants to create microclimates
- Avoid vents/drafts near foliage
I learned the banana bag trick from a gardener in New York--you wrap emerging flower stalks in perforated plastic. The perforated plastic encloses moisture to create a tropical humidity environment while also allowing for air circulation. My first bunch indoors with this method was perfect ripening, after four failed attempts-but patience is needed!
Read the full article: How to Grow Bananas: Expert Tips for Bountiful Harvests
