Gelatine Plant Food
Plain unflavored gelatin, dissolved in water, is an old-fashioned homemade plant feed that supplies a boost of nitrogen along with a bit of extra structure to houseplant soil.
Why Gelatin Works
Gelatin is made from collagen, which breaks down into amino acids containing nitrogen — a nutrient central to healthy leafy growth. Mixed into water and applied to the soil, it offers a mild, slow-releasing boost that many gardeners have relied on for houseplants for generations.
Dissolve one packet of unflavored gelatin in a cup of hot water, then dilute with three more cups of cool water before applying to avoid shocking roots with heat.
Use this as an occasional monthly boost rather than a regular feeding routine — gelatin lacks the full range of nutrients a balanced fertilizer provides.
Best Suited to Houseplants
This homemade feed is most often used on indoor plants, since it's easy to mix in small batches and apply with a regular watering can. It works well as a gentle supplement between regular feedings rather than a replacement for a complete fertilizer.