2. Rice water
Rice cooking water is one of the little-known secrets to growing beautiful orchids, as it's rich in calcium, potassium, and vitamin B—but only if it's free of salt, which could actually harm your plants.
Save the cooking water from potatoes or rice (strictly without salt) and use it to water the orchids every two weeks.
3. Milk
Excellent source of calcium and also very useful for our plants, especially orchids.
Mix milk and water in a ratio of 1/4 milk to 3/4 water. Use the solution to water your orchids every 2 weeks.
4. Fallen oak leaves
If you live near an oak tree, you can use its fallen leaves to make fertilizer for your orchids.
Collect the oak leaves from the ground and place them in a pot, pour in 5 liters of water and turn off the stove once it reaches a boil.
Let it cool, place it in a clean container, and leave it in the sun for a week. Use it to water the orchids every two weeks.
It's recommended to water orchids by immersion, that is, by placing the pot in water for 20 minutes, taking care not to wet the leaves. Let the pot drain before putting it back in its place.
