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A Complete Guide to the Key Cultivation Techniques for National Day Chrysanthemums

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I. Potting. The cuttings can be potted once they have 3 to 4 roots. When potting, spread the roots out, firm the potting soil, water thoroughly, and shade the plants; afterwards, spray water once each morning and evening. After they have established, gradually move them into sunlight. The pots should be placed on level ground with good drainage, with the pots kept more than 5 cm apart. During growth, generally do not move the pots, so the roots can penetrate the soil as much as possible to absorb nutrients. II. Pinching. Two weeks after potting, carry out the first pinching so the seedling height is level with or slightly above the rim of the pot. Afterwards, each time 4 to 5 leaves appear, keep 2 to 3 and pinch off the terminal bud. Finally

I. Potting. The cuttings can be potted once they have 3 to 4 roots. When potting, spread the roots out, firm the potting soil, water thoroughly, and shade the plants; afterwards, spray water once each morning and evening. After they have established, gradually move them into sunlight. The pots should be placed on level ground with good drainage, with the pots kept more than 5 cm apart. During growth, generally do not move the pots, so the roots can penetrate the soil as much as possible to absorb nutrients.

II. Pinching. Two weeks after potting, carry out the first pinching so the seedling height is level with or slightly above the rim of the pot. Afterwards, each time 4 to 5 leaves appear, keep 2 to 3 and pinch off the terminal bud. The final pinching depends on the variety; generally, the yellow series is pinched in early August, and the red series before July 20.

III. Watering. National Day chrysanthemums prefer cool conditions, dislike heat, and fear waterlogging and rain damage, so follow the principle of not watering until the soil is dry. Never water at midday in the height of summer; it is best to water with sun-warmed water before 9 a.m. or after 6 p.m.

IV. Fertilizing. After potting, apply a light cake fertilizer solution once each time the plants are pinched. In July and August the weather is hotter and National Day chrysanthemums grow slowly, so apply less or no fertilizer to avoid damaging the roots and causing rot. Half a month after the Start of Autumn, National Day chrysanthemums begin to form flower buds; at this point, increase fertilizer and water management, applying once a week with gradually increasing concentration. After the flower buds show color, spray a 0.2% to 0.3% potassium dihydrogen phosphate solution once a week. Once flowering begins, stop fertilizing.

V. Pest and disease control. Throughout the entire cultivation of National Day chrysanthemums, attention must be paid to pest and disease control, such as leaf spot, black spot, and stem borers, and chemical control should be carried out according to the condition of the disease.

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