In fact, some edible flowers are perennials (hyssop, violet, chicory…), and although most of them are annuals (hollyhock, calendula, chrysanthemum, safflower….) some are also biennials (English daisy, sweet william…). In other terms, not all seeds will sprout at the same time and the roots of some flowers may overwhelm the growth of others.
Edible flowers are better grown as a single crop: Only one type of edible flower should be planted per cube of rock wool.
However, when planting nasturtiums, expect them to create a ‘cascading bush’ and this is why you shouldn’t plant anything (aside from more nasturtiums) in the lower growing section.
When growing sunflowers, only plant dwarf sunflowers because when growing the regular type, the diameter of the stems can get much bigger than the planting hole/cavity and damage your tower. Nevertheless, we loved our experience when growing sunflowers on our towers (we even published a video on our website comparing planting sunflower seeds in the soil vs. using an aeroponic tower…. Although the results on the towers were spectacular, we will not repeat the experience!)
At Agrotonomy, even though we love to enhance our plant-based food creations with edible flowers, we recommend to buy them organically or grow them in the soil and to strategize aeroponic tower gardening more efficiently with other crops (unless a tower is being used for ornamental purpose!).
Yes! It is possible to grow aeroponic sunflowers on a Tower Garden®! These sunflowers grew massively, measuring more than 13 feet (4 meters) tall! Sunflowers grow quickly and you can expect to have flowers within 8 weeks. The power of the tower! This is a testament to the durability and strength of the Tower Garden® which is able to sustain such an impressively enormous plant which has a considerable weight.