Mexican Sunflower Yellow (Tithonia Speciosa Yellow Torch) - This beautiful yellow annual is grown from Mexican Sunflower seeds. The incredible 3 - 4 inch yellow flowers are excellent for cutting. They also are butterfly magnets, particularly the Monarch butterfly. Yellow Torch begins blooming in July or August and continues until frost. Place yellow Mexican Sunflower plants behind beds or borders where their coarse texture, rangy habit and vivid flowers will stand above less boisterous plantings. Tithonia may grow as a perennial in USDA Zones 10 - 11.
Growing Mexican Sunflower from flower seeds is very easy and fun! Directly sow the seeds into prepared seed beds after all danger of frost has passed. Prepare the bed a couple of weeks before sowing and add organic mulch. Sow Tithonia seeds in groups of 2 - 3 seeds spaced 12 - 18 inches apart. Thin the seedlings to the strongest plant. The Mexican Sunflower plant will benefit from having the spent blooms removed. The plant thrives in hot, sunny climates and does best if it is allowed to dry out in-between deep waterings.
The primary purpose of a flower is Repreproduction. Since the flowers are the reproductive organs of plant, they mediate the joining of the sperm, contained within pollen, to the ovules — contained in the ovary. Pollination is the movement of pollen from the anthers to the stigma. The joining of the sperm to the ovules is called fertilization. Normally pollen is moved from one plant to another, but many plants are able to self pollinate. The fertilized ovules produce seeds that are the next generation. Sexual reproduction produces genetically unique offspring, allowing foradaptation. Flowers have specific designs which encourages the transfer of pollen from one plant to another of the same species. Many plants are dependent upon external factors for pollination, including: wind and animals, and especially insects. Even large animals such as birds, bats, and pygmy possums can be employed. The period of time during which this process can take place (the flower is fully expanded and functional) is called anthesis. The study of pollination by insects is called anthecology. India is the land of colors and diversity. It is reflected well through the range of flowers, which is found from Kashmir to Kanyakumari, Attock to Cuttack from Ganganagar to Itanagar and from Leh to Lakshadweep.