This is a fantastic achievement! Poinsettia (Euphorbia pulcherrima) has a reputation as one of the most delicate plants, which most people unfortunately throw away after the holidays. If yours is already five years old, then you are doing something very well.
You have made me very curious with this natural ingredient! Since poinsettia has special nutritional needs (especially potassium and magnesium for its spectacular bracts), many people swear by homemade remedies.
I have a guess as to what the ingredient you use or what the “commentators” usually recommend:
Cooked coffee grounds: Many people use it to acidify the soil and supplement nitrogen.
Yeast water: An excellent growth stimulant and soil conditioner.
Eggshell decoction: To replenish calcium, which strengthens the stem.
Cinnamon: Which is a natural fungicide and stimulates the root system.
Banana peel water: Which is full of potassium, which is essential for abundant flowering.
The other half of the secret: Light and darkness
Whatever miracle cure you use, for five-year success, you must also follow the “short-day” rule: in order to be red again by Christmas, the plant must spend 12-14 hours a day in complete darkness during the autumn months.
Can you tell us what specific natural ingredient has worked for you? I’m sure many people who are currently struggling to keep their plants alive this year would be grateful for it!