Have you noticed that some flowers on the windowsill look like they're from a magazine cover, while others barely survive until the next watering?
It may not be the amount of fertilizer or the expensive pots, but the fact that you still haven't looked in your refrigerator.
Ordinary eggshells, used tea leaves or even potato broth can become magical elixirs for your plants.

For example, water after boiling potatoes contains starch and potassium, which strengthen the roots and stimulate the growth of greenery.
Just cool it and water the flowers - you will notice the result in a couple of weeks. And if you crush the eggshell and mix it with the soil, it will not only reduce the acidity of the soil, but also protect the roots from rot thanks to calcium.
Another life hack is banana peel. Cut it into small pieces, soak it in water for a day, and then use the infusion for watering.
Potassium and phosphorus in the "banana tea" will make the leaves glossy and the buds large. But do not overdo it: excess organic matter can cause mold.
By the way, regular garlic that you add to salad saves flowers from pests. Crush a couple of cloves, pour a liter of water, let it sit for a day, strain and spray the leaves - aphids and spider mites will disappear without chemicals.
And don’t rush to throw away expired beer: dilute it with water (1:10) and water the plants – the yeast will activate the soil microflora.
Have you tried to "wake up" orchids with ice? Put a couple of cubes on the soil once a week - melt water is softer than tap water, and the slow melting imitates natural tropical conditions.
Or use used coffee grounds as drainage for succulents: it loosens the soil and repels midges. Experiment, but remember: even natural fertilizers require moderation.
Start with small doses and observe the reaction of plants. After a month of such experiments, your windowsill will turn into a mini-greenhouse, and the neighbors will ask where you go for "magic" fertilizers.