Put a drop of oil in the pot, the flower will bloom in one month, and the leaves will not turn yellow for 10 years

What kind of oil can be used?

Flower Growing Encyclopedia

First of all, the oil that Huahua is talking about here is edible oil or used oil. Never pour your diesel, engine oil, essential oil, etc. into it, otherwise the flower will definitely die.

However, it is too painful to use the cooking oil at home. It is better to use the waste oil in the range hood, the oil after frying, or the residue filtered out of the frying oil.

What kind of flowers can be used?

Flower Growing Encyclopedia

It is best to use it for flowers that like fertilizer, such as roses, Clivia, clematis, etc. These plants consume a lot of nutrients when they bloom, so they have a great demand for fertilizer.

Huahua summarized the situation of flower lovers using waste oil.
Flower lover A: My grandma poured it directly into the pot of evergreen, and it grew very vigorously. The wild wood in the evergreen pot grew very big leaves, which seemed really fat, but they were slimy.
Flower lover B: I use the oil from the range hood as fertilizer for Kalanchoe and geranium. I have been using it for several years and the effect is very good. I suggest that the OP stay away from the roots when fertilizing.
Flower friend C: I have always fed my Clivia with waste oil from the range hood. I poke a few holes along the wall of the pot and then pour the oil in, using half a box of oil each time. The Clivia did not bloom last year, but I counted 15 flower buds a few days ago. Today it seems that two more small flower buds have popped out. That’s awesome!
Flower lover D: Regarding oil, I heard from my mother that she buried lard in the box where she planted roses, and the flowers that bloomed were oily and very big. I haven't used the oil the OP mentioned, but I guess the principle is the same. It should be good for flowering plants as well.
According to the summary of flower lovers, the flowers that can use waste oil are:
Catharanthus roseus, Kalanchoe, blue snow flower, Christmas cactus, Clivia, verbena, geranium, spider plant, clematis, pomegranate, honeysuckle.

How to use these oils?

Flower Growing Encyclopedia

Usage method 1:

Dosage:
It must be small, about half a spoon or 1 spoon is enough.
usage:
Taking roses as an example, use a small wooden stick to poke a hole near the edge of the rose pot, then pour the prepared waste oil into it, cover it with soil and compact it.

The purpose of burying it deep in the soil is to avoid attracting small insects when microorganisms decompose the waste oil.

How often to use:
Because waste oil takes a long time to decompose, it is best to have a longer interval. If it is not diluted, it only needs to be used once every six months or so.

Usage method 2:

Add water: add a small box of waste oil from the range hood to a plastic bucket of water.

When using it, just water it in circles along the edge of the flowerpot, but don't water it every time. It can be watered once every one or two months.