Orchid fertilizer ideas that blow your mind: how many of these netizen-made recipes have you tried?

There is no need to say how much orchid growers love their orchids. They all want to give them something good to eat and drink, hoping they will grow day and night and bloom as soon as possible. Among these, orchid fertilizer is indispensable. Our netizens really have some wild ideas. Which of the orchid fertilizers below have you used?
1. Banana peels, including all kinds of fruit peels. Netizens rot them and apply them to orchid pots, and it is said they can have very good fertilizer effects. Haoshe Farmer has not tested the specific functions and fertilizer effects. This one is still relatively environmentally friendly.
2. Fish scales and fish innards rotted and used as orchid fertilizer. Never mind how good its fertilizer effect is, just ask whether you can stand the smell. Netizens say the smell becomes less after rotting, but no matter how much less, it still cannot be without a fishy stench! Orchids are known as the fragrance of gentlemen. If this kind of fertilizer is applied to a blooming orchid pot, are you sure that smell is what you like?
3. Rice washing water. General flower-growing books have said that watering flowers with rice washing water can supplement certain elements. But rice washing water easily becomes moldy. It is not very clear exactly how many nutrients it has, but its moldiness can very likely bring fungal damage to orchids.
4. Cow dung. A common farmland fertilizer used by rural people. Its advantage is high heat, and overwintering crops can be more cold-resistant when it is used, for example: rapeseed, wheat, etc. But using it as orchid fertilizer, I really do not know where the benefit lies. If it is unrotted cow dung, once it ferments it will produce a lot of heat, and orchid roots may not be able to stand it.
5. Plant ash. As far as orchids' growth preferences are concerned, this is a bit of a foolish mess. Orchids like slightly acidic soil, while plant ash is alkaline. We learned this in junior high school chemistry class, right? Never mind how good its fertilizer effect is, just this alkaline substance alone, are you sure orchids will really like it?
The above is what Haoshe Farmer personally thinks. Please follow this official account, and if you like it, forward it. If there is anything insufficient or inappropriate, netizens are welcome to correct it.