After the spring, most of the flowering period of the rhododendron we raise is over, after the end of the flowering period will enter a stage of rapid growth of new shoots and new leaves, in the process of growing new leaves in the spring, the rhododendron we raise is easy to have a problem, that is, the new leaves grow out not as green as the old leaves, some will be seriously yellowed, in fact, the rhododendrons grow vigorously in the spring, this situation is frequent, we must remember that a kind of water to regularly water it, in order to ensure that its leaves are oily green, this water is acid water.
Rhododendron it is a plant in the south, it is acidic soil, in the home, especially in the northern region, the water quality alkaline soil alkaline, raise it will be yellow leaves, his demand for iron elements is relatively large, if the soil is alkaline, even if there is iron in the soil, it can not absorb, can not get enough iron, its root system will basically grow longer and weaker, after the new leaves grow out, there will be leaf veins are green Other locations yellow, so to ensure that the iron is sufficient, to ensure that the soil is acidic.
If we don't want it to have yellow leaves, if we don't want him to have a zombie seedling, this fertilizer is ferrous sulfate. Ferrous sulfate can not only regulate the soil to be acidic, but also he iron element is very much, after pouring into the pot soil can make the soil iron sufficient, under the premise of acidity by the root system to absorb, the leaves will grow longer and greener, the root system will grow more developed.
But when using it must pay attention to it, because ferrous sulfate directly with hydration will be oxidized, into a brown ferrous sulfate solution can not be watered flowers, because it belongs to trivalent iron, can not be absorbed by the root system, after pouring will only attach to the root system, hinder the root system to absorb water and nutrients, when we mix water, to use 1000 grams of water plus a gram of ferrous sulfate, plus a gram of edible vinegar, so that after direct stirring it will not oxidize, Pouring into the pot soil can be quickly absorbed by the root system.
So we raise azaleas in the spring, we must regularly water him once a month ferrous sulfate, after watering he can grow quickly, when the new leaves grow thick and oily green, the root system will be more developed, so that we can ensure that the rhododendron is well raised, so that it blooms again in autumn.