10 Things in Your Kitchen That Double as Plant Food

Feeding your garden doesn’t always mean running to the store for fertilizer. Some of the best nutrients for your plants are hiding in plain sight—right in your kitchen. Many food byproducts and overlooked leftovers contain minerals, enzymes, and natural compounds that plants thrive on.

These surprising items are budget-friendly, eco-conscious, and incredibly effective. Here’s a fresh list of 10 kitchen finds that secretly double as plant food.

Potato Peels

Packed with phosphorus and magnesium, potato peels make an excellent compost addition or boiled “tea” for a quick root-strengthening boost.

Cornmeal

This pantry staple feeds soil microbes and can even help suppress certain fungal diseases. Sprinkle lightly around plant bases to enrich the soil.

Pickle Juice (Diluted)

The vinegar in pickle juice, when heavily diluted, can acidify soil for acid-loving plants like blueberries or hydrangeas. Use sparingly and only on the right plants.

Nut Shells (Crushed)

Crushed peanut, walnut, or pistachio shells aerate soil and break down slowly, offering long-term enrichment and improving drainage in potted plants.

Avocado Skins

Tough but nutrient-rich, avocado skins break down slowly in compost and add potassium, magnesium, and fiber to your garden soil.

Fish Bones

Rich in phosphorus and calcium, fish bones can be cleaned, crushed, and buried in soil. They decompose slowly, feeding plants over time—especially root crops.

Yogurt (Unsweetened, Diluted)

The probiotics in plain yogurt can help stimulate beneficial soil bacteria. Use diluted yogurt to water plants occasionally for microbial balance.

Used Paper Towels (Unbleached)

Unbleached paper towels used for clean food messes can be composted and help retain moisture while breaking down into organic matter.

Citrus Pulp

The leftover pulp from juicing oranges, lemons, or limes is rich in potassium and can be added to compost or lightly buried in garden beds.

Used Cooking Water from Steamed Veggies

Let this cool and pour it directly onto garden soil—it's full of water-soluble vitamins and minerals your plants can absorb instantly.

Gardening success doesn’t always require fancy tools or expensive products. Sometimes, it’s just a matter of seeing your kitchen scraps in a whole new way—and using them to help your garden grow naturally and beautifully.