(b) Classification based on climatic requirements

(b) Classification based on climatic requirements
    Based on climatic requirements, annuals are classified into the following three groups:
    i) Rainy season annuals
    ii) Cold season or winter annuals
    iii) Hot weather / summer annuals

    Rainy season annuals
    These annuals are grown in rainy season and can withstand heavy rains, and high humidity in atmosphere than other annuals. Seeds are sown in June and seedlings are transplanted in July.
    e.g. Balsam, Cock's comb, Amaranthus, Gaillardia

    Winter annuals
    These annuals are able to tolerate comparatively low temperature and, hence, are comfortably grown in winter season and bloom best during this season. These winter annuals are sown in September and transplanted in October in plains whereas in hills, these are planted in February-March and July-August.
    e.g. Antirhinum, petunia, nasturtium

    Hot weather annuals
    These plants grow luxuriantly and produce flowers under high temperature and have the ability to survive extremely high temperature. The seeds are sown in end of February or beginning of March and seedlings are transplanted in end of March-April.
    e.g. Zinnia, Kochia, Portulaca, Tithonia, Gaillardia, Gomphrena, Sunflower, Cosm    os.

Last modified: Monday, 19 December 2011, 6:14 AM