There is throughout the year demand of this flower. Though it is not possible to meet the demand by cultivating this flower all round the year in open conditions because of seasonality yet there are other ways where growers can benefit themselves by meeting the demand of chrysanthemum. Cultivating chrysanthemums under greenhouse conditions and providing artificial environment congenial for its growth and quality blooms is considered as another option to produce the crop throughout the year.

Package of Practices to grow chrysanthemums under greenhouses

Cultivation of chrysanthemum under greenhouse conditions makes it possible to grow the flowers throughout the year. For this, the entire parameters essential for flowers production are provided under controlled environmental conditions. The temperature, humidity, aeration etc are modified according to crop needs.

The structure of the greenhouse should be in such a way so as to provide sufficient light during winters. The covering of this structure should be either polythene or glass and the orientation is advised to be towards east to west. To maintain sufficient temperature and humidity inside the greenhouse, ventilators or exhaust fans are to be installed.

Benches are constructed to grow cut or potted plants. To grow cut flowers, the benches are elevated to some extent. There should be one central path to transport sprayers, wheel barrows, and narrow walks.

If greenhouses are constructed in cooler region, then there should be some arrangements for to keep the inside warm mostly during the nights. There should be pipes installed inside the greenhouse to pass hot water or steam. And if greenhouses are in warmer regions there should be fans and pads installed at the time of construction to cool the inside air. For misting, the nozzles are recommended throughout the greenhouse and the water pressure should not be less than 500lb/inch to carry out the process of evaporation without falling on leaves.

Lighting system should be proper to ease normal growth of plants. As chrysanthemum is a short day plant in terms of flower initiation, during summer artificial shading arrangements is needed. Here black polythene sheets become a good option. A mixture with proper ratio containing any of the two components from sand, peat, pine bark, humus along with peanut compost makes a good soil mixture. Soil sterilization is very important before planting. It can be done using formaldehyde as recommended. Steam can also be injected and later covered with plastic mulch to prevent heat generation through steam.

Other manual operations like pinching, disbudding, and mulching are also done in the same way as in open seasonal cultivation of this crop.

As the plant needs adequate watering, it is advised to install micro-sprinklers system in the greenhouse. Other crop management practices are also followed in the same way as under open conditions.

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