Marigold Flower Growth Stages. Marigold starts blooming from the end of winter till it arrives again with first frost the next year. The optimum growing temperature is 182C at night.
It was concluded from the above results that marigold could be pinched at I feet height for significant growth and flower production. At high temperatures the growth of the plant is affected besides reduction in flower size. French Marigolds French marigolds are one of the most common varieties.
They are both deer resistant and drought tolerant.
Sunny marigolds Tagetes spp supply a splash of summer color in beds borders and containers. The plant in these lots received 20 short day cycles during the period from the 14 th day to 34 th. To flowering for all lots are compared the earlier flowering groups are lots 6 7 9 and 10. They also grow quickly and can be direct-seeded after the last frost in spring for a summer of bright blooms.