Cultivation and maintenance of the chrysanthemum

Too often removed from gardens, the chrysanthemum nevertheless offers a fantastic palette of colors and shapes when the decor is a little dull in autumn. Forget its mortuary connotation which only exists in a few countries, to do as in Asia and consider it as a little sun bringing happiness!

Des chrysanth
Chrysanthemums in the garden

Plant the chrysanthemum in the garden

Apart from the very elaborate varieties, the classic small-flowered chrysanthemum is quite rustic to be planted in the garden.

If you bought a potted chrysanthemum in the fall, plant it at a sunny location in a drained soil because it fears more than anything stagnant moisture at the roots. A semi-shaded location may be considered in the southernmost regions.

Add some compost and a good dose of river sand when planting, especially if the soil is heavy and clayey. Water copiously.

Plant the chrysanthemum in a pot

  • Choose a pot pierced at the bottom, with a minimum volume of 5 liters.
  • Provide a draining layer at the bottom of the pot (gravel, pebbles, pouzzolane…).
  • Choose a potting soil light but fertile that will not retain excess water.
    Add balls offertilizer slow release.
  • Place your chrysanthemum in the pot.
  • Tamp around the collar.
  • Water copiously then empty the cup.

Chrysanthemum care

In the garden

In a garden, the chrysanthemum asks not much maintenance.

In autumn, cut off the inflorescences after flowering then wait for your chrysanthemum to shed hair to prune it 10 cm from the ground.

Straw the foot to protect the stump from frost with a layer of organic mulch 20 cm thick (dead leaves, BRF, Straw…).

In spring, then in July, scratch at his foot a mixture of compost and organic fertilizer in granules.

Start again at water very regularly if it doesn’t rain enough by April. Let the soil dry on the surface for 3 cm before watering again. This treatment is also valid in summer, because the chrysanthemum really fears excess moisture at the roots. In heavy soil or in the event of excessive watering, it will be prone to various fungal diseases (fungi) which are manifested by white felting, stains on the foliage or rotting of the stems.

To obtain a port in a ball, pinch in May all stem ends just above a pair of leaves. If you want tall growth, prune only the side stems from the base.

For varieties with large flowers, cut side buttons in order to promote the growth of the top flowers.

Stop watering in the fall as soon as the rains are sufficient.

In a pot

Growing chrysanthemums in pots requires some vigilance.

In full sun and in a windy area, the watering should be very regular but never excessive, the secret being to find the right balance and never let water stagnate in the cup. If the chrysanthemum shows softening or wilting of the foliage: it shows signs of lack of water. If fungal diseases develop, it is because he has suffered an excess of water!

Water only to the foot in reasonable quantity and allowing the surface of the mixture to dry between two waterings.

In spring, add fertilizer organic nitrogen to promote growth, then from the beginning of summer, switch to a fertilizer ‘Special flowering plants’ every 15 days after copious watering.

Stop adding fertilizer in October.

The size operations, here again, achieve the desired port. Pinch the ends of the stems in the spring then in early summer to keep a port in a ball. Prune faded flowers in the fall and reduce the foliage to 2 inches from the surface of the pot.

Protect the chrysanthemum from the rain under a roof ledge, for example, to spend the winter. Water only if the mixture dries almost completely.

Protect the most fragile varieties by insulating them from the ground by means of gratings and by surrounding the pot with bubble wrap. Straw the foot to protect it.

Multiplication of chrysanthemum

Cuttings

This plant is very easy to multiply by cuttings rod ends in late spring. Plant your cuttings in a ‘Special sowing’ potting soil.

Place the cuttings in a very bright location without direct sunlight and water regularly. After three weeks, roots should be formed and signs of recovery should appear.

Repot in a 3 to 5 liter pot or plant it directly in the garden, keeping a close eye on watering.

Tufts division

The division of the tufts is carried out in the spring.

  • Dig up an aging subject and cut the motte in several sections with a sharp knife or with the spade iron.
  • Immediately replant the shards in the garden.
  • Tamp around the collar then water.

Chrysanthemum diseases and parasites

Fragile if it does not grow in very specific conditions, the chrysanthemum is liable to suffer a great deal of damage.

Parasites

Slugs and snails love new shoots: beware of spring!

Later it’s your turn miners, psyllids Where reticulated bugs cause damage to foliage and stems. Spray fern manure as a prevention.

Diseases

Botrytis, septoriose, powdery mildew and rust are the most common diseases. They appear in the event of water stagnation at the roots (poorly drained soil), foliar watering and lack of ventilation. Ensure optimal growing conditions to prevent them. Spray horsetail manure every 15 days.


Source: Au Jardin, conseils en jardinage by www.aujardin.info.

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