Growing roses with kitchen waste: one small seedling sprouted dozens of flower buds and bloomed in layer upon layer until the pot burst with flowers

Roses are in full bloom right now. The several pots of roses grown on the balcony are all blooming now, single-petaled and double-petaled, purple, white, red, climbing roses, miniature roses, forming a beautiful and romantic picture.
How should roses be fertilized?
1. In winter I bought a 10-yuan miniature rose at the flower market. I did not even change its pot and just placed it on the terrace to grow, watering it once whenever I remembered. It stayed like that all along. A while ago I added some soil to the pot, then poured in fertilizer water twice, and such a small plant actually sprouted dozens of flower buds. This shows how important fertilizing before the flowering period is.
2. The fertilizing time can be chosen during the spring growth period, or fertilizing in autumn is also fine. Then there is fertilizing before flowering, and after flowering, pruning once and then fertilizing again. Roses simply love heavy fertilizer and plenty of water.
3. Roses are not picky about fertilizer. I usually use an empty bucket with a lid and put rice-washing water, soybean residue, vegetable leaves, fruit peels, these kitchen scraps, and even leaf mold soil into it together to ferment. Then it becomes fertilizer water, and it is quite good for watering roses.
4. There are also ordinary flower fertilizers from flower and bird markets, decomposed chicken manure fertilizer and cake fertilizer, and even a small amount of compound fertilizer will do. With fertilizer, roses grow fast and bloom abundantly.