Topdressing nitrogen fertilizer before flowering, applying more phosphorus and potassium fertilizer after flowering, and watering properly, and increasing light after 10 can promote early flowering. When the plant grows to 20 cm high, stretch the high scaffolding to prevent lodging.
How to maintain and water the flowering period: Delphinium likes the wet growth environment. In flowering period, it is especially necessary to avoid the dryness of basin soil and ensure the water supply. Flowers will bloom, be brilliant and be beautiful.
Fertilization: Nitrogen fertilizer should be selected before flowering to ensure that the flowers are fat and bright. After fertilization, more phosphorus and potassium fertilizers should be applied to ensure the normal growth of plants and avoid excessive growth and lodging. Fertilize 1-3 times a month.
Pest control: The flowering period is when delphinium attracts bees and butterflies. Pay attention to the germs or eggs brought by small animals such as bees and butterflies to plants, and check them in time. Aphids and noctuids should be cleaned up in time and sprayed in time to kill them.
Plastic maintenance: Only when the main stem is upright can huge and beautiful flowers bloom, and the main stem should be avoided from breaking. You can insert branches or bamboo poles into the flowerpot as traction to help the stressed trunk.
Appreciation of flower morphology: the top of inflorescence stem or branch; Lower bracts are leaflike, upper bracts are small, undivided and linear; Pedicel 0.7-2.8 cm long.
Bracteoles near the middle of pedicels, small strips; Sepals are purple, pink or white, broadly ovoid, about 65438 0.2 cm long, sparsely pubescent in the center outside, subulate, about 65438 0.6 cm long.
Petals trifoliate, the middle lobe is about 5 mm long, the apex is dichotomous, and the side lobes are at right angles to the middle lobe, oval; The anther is about 65438 0 mm long.
Delphinium has many colors, white is elegant, pink is poetic, blue is melancholy, and purple is elegant and dignified.