Under what circumstances do you need to prolong the flowering period? what kind of fertilizer should be applied to cuckoos during flowering?

Potted rhododendron needs regular fertilization because of its limited space and few nutrient reserves. And the cuckoo itself also likes fertilizer, but fertilization needs to strictly control the concentration to avoid excessive fertilizer damage. In order to make the plant grow more vigorously and bloom beautiful flowers as scheduled, topdressing is usually carried out during the growing season, before and after flowering, and even if necessary during flowering. So, what kind of fertilizer should be applied to cuckoos during flowering?

However, fertilization during flowering is usually carried out as a supplement in the case of insufficient fertilization before flowering. In order to promote the flower, it is mainly given enough fertilizer during the bud and bud period before the flower. In general, it takes 8-9 months for cuckoos to differentiate flower buds and bloom smoothly. During this period, timely topdressing is a key link to promote the growth of rhododendron and make it grow luxuriantly and blossom more and more.

However, it should be noted that if we do not fertilize the cuckoo before flowering, the flowering effect of the original plant is not satisfactory, and there may be little or no flowering. Therefore, we need appropriate topdressing during flowering as a supplement to stimulate plant flowering. The flower-promoting fertilizer is generally based on phosphorus and potassium fertilizer, so it is recommended to spray it with potassium dihydrogen phosphate solution. But it is best to spray the thin liquid fertilizer evenly on the plant.

However, if we have already applied enough fertilizer before flowering, especially during the bud and bud period, then the cuckoo generally does not need to apply fertilizer during flowering. Because the original nutrients are sufficient to support the cuckoo to blossom smoothly, and then hastily fertilize, the result will be counterproductive, not only may cause branches and leaves to grow so as to inhibit flowering, but may also cause flowers to fall, and may even bring fertilizer damage.

Topdressing potted rhododendron at flowering stage is generally carried out during the period of bud and bud, and it should be mainly topdressing phosphorus and potassium fertilizer, with little or no nitrogen fertilizer as far as possible. In the case of sufficient nutrients, try not to topdressing during flowering, but continue to topdressing after flowering to promote plant growth and achieve rejuvenation effect. You can apply fertilizer properly for several times in 2-3 months before flowering, stop fertilizing in time after budding, and apply fertilizer 2-3 times after flowering.