Giant sunflowers can get heavy, and have a tendency to grow in different angles, or droop with the weight of the flower head. To mitigate this, use a cane to begin with and then swap this out for something which is taller and weightier as they get bigger. If possible, plant sunflowers under shelter from the wind to help avoid them being torn down in gales and storms. The mammoth sunflowers are readily able to reach twelve feet in height in normal growing conditions. This is much taller than most other varieties of sunflowers. They surpass nearly every other type of sunflower, with their only common competition perhaps being the Titan Sunflower and the American Giant Hybrid Sunflower. On the flip side, the hungry critters return when the flower heads start turning to seed. Use bags or netting to protect the flower heads. Or let them dine. Sunflower beetles love to nibble at sunflower’s leaves and stems. Though they have some benefits to plants, large amounts of them can do damage to the stem, which can impact the stability of growing plants. To limit the number, plant later in the season.

Sunflowers need different amounts of water depending on which stage of the growing process they are in. For example, germinating sunflower seeds need more water than established plants. Growing sunflowers, particularly giant varieties like the Titan and Mammoth, can add an element of surprise and beauty to your garden. These towering flowers, with their vibrant yellow blooms and high-reaching stalks, captivate the attention of everyone who sees them.Sunflower ‘Giraffe’. The name gives the game away – this sunflower is a true giant. Developed by plant breeder Victoria Wakefield over a 30-year period during which she repeatedly selected and crossed the seeds of the tallest sunflowers, this beauty consistently reaches a staggering height of 5.2m (17ft) and above. The Sunzilla Sunflower is a popular giant sunflower variety for children’s gardens. These tall plants can be grown in a line to create a towering wall of sunflowers. They are well-known for attracting birds and pollinators, as well as for their edible seeds.

This curiously monikered variety is a bushy-leafed, easy grower which produces a mass of flowers with dark, central discs and golden petals. Ideal for cutting and stuffing in vases. Teddy Bear Sunflower

Join our Gardening Community

Sunflowers need space from all angles to grow properly. If dug into flower beds or planted in pots, make sure there is enough depth for their roots. Most varieties will need at least 20 cm (8’’) to grow down. The Titan sunflower is an heirloom variety that can reach heights of over 12 feet, with blooms up to 2 feet in diameter. Their edible seeds are also huge, about the size of a dime. Mammoth Sunflowers, on the other hand, are often slightly taller. Their average height usually lies in the range of 9 to 12 feet, but they can potentially reach up to 15 feet or more given the right growing conditions. This makes them an excellent choice for gardeners seeking a dramatic vertical element in their landscapes. Do Titan Sunflower And Mammoth Sunflower Have Different Flower Sizes?