2. Crabapple is a kind of plant adapted to weak acidic soil, its adaptive soil ph value is 6-5-6-8, too high or too low will affect its growth and flower brightness and color. In general, tap water is neutral or neutral or more, so, long-term watering flowers with tap water, the soil is bound to be alkaline, therefore, every half of the application of ferrous sulfate on the soil for a mediation. The method is: 2-3g of ferrous sulfate, plus 200-300ml of water, shake evenly, so that it is fully dissolved, when the flowers need to be watered into can be. If there is ph test paper, available 200-300ml of water, add the appropriate amount of ferrous sulfate, adjusted to 6-5, when the lack of water into.
3. In order to make the crabapple orchid bloom can be luxuriant and bright, through the summer dormant period, to add fertilizer in time, the soil can be used 1:1:1 compound fertilizer. The foliage can be sprayed with potassium phosphate solution.