The Little ABC of DIY Fertilizers – Alternatives to Chemical Weapons

Many gardeners are moving away from chemical fertilizers and pesticides, opting for environmentally friendly alternatives. These natural options are often inexpensive or free, readily available, and free from harmful side effects.

This guide explores various do-it-yourself, eco-conscious fertilizers and pest control methods that can benefit your garden.

DIY Fertilizer Options:

• Algae: Harvested from garden ponds, algae are rich in potassium, nitrogen, and phosphorus. Dried, crushed algae can be mixed into the soil as a flower fertilizer.
• Beer: Leftover or flat beer can be used as a plant fertilizer due to its nutrient content.
• Organic Banana Peels: Cut into small pieces and mixed into garden beds, banana peels provide potassium and magnesium. It is recommended to use peels from organic bananas to avoid potential contaminants.
• Nettle Suds: Nettles are a nutrient-rich plant that can be used to create a liquid fertilizer. Nettle fertilizer is beneficial for plants like cucumbers and strawberries and can also aid in pest control.
• Eggshells: Crushed eggshells can be incorporated into garden or potting soil, supplying plants with essential minerals.
• Wood Ash: Wood ash can be sprinkled around plants to deter slugs and snails. It also acts as a fungicide and can fertilize plants that prefer acidic soil, such as lavender.
• Coffee Grounds: Coffee grounds are a valuable garden resource. They can improve soil, benefit houseplants, berry bushes, ornamental plants, fruits, and vegetables. They are particularly good for hydrangeas. Use coffee grounds sparingly, as plants can only absorb a limited amount of nutrients.
• Cooking Water: Water used to boil eggs, potatoes, broccoli, cabbage, or asparagus contains valuable minerals and nutrients and can be used as a plant fertilizer.
• Compost: Compost is a highly effective natural fertilizer. It can be applied to plants, beds, or lawn areas to provide nutrients. Compost also improves soil’s water retention and promotes grass growth.
• Skim Milk: Diluted skim milk (1:8 ratio with water) can be used to fertilize plants, providing amino acids and nutrients directly to their roots. It also helps prevent fungal diseases like powdery mildew.
• Mineral Water: Stale mineral water can be used in the garden. Its calcium content can help dissolve lime in the soil and promote plant growth.
• Plant Jauche (Liquid Fertilizer): A fermented herbal extract, plant jauche promotes plant growth and acts as a pest deterrent. While its preparation can be aromatic, the results are beneficial for the garden.
• Tea: Used tea leaves can be beneficial for the garden. Green tea improves soil, black tea repels pests, and chamomile tea aids in plant propagation. As with coffee grounds, use tea leaves in moderation.
• Onion Tea: A mixture made by boiling onion peels in water can be sprayed on plants to combat aphids, gray mold, rot, and fungi. This is particularly useful for vegetables like tomatoes.