Sunflower plants grow well in average to rich soils. They need to grow their roots deep and wide, to enable them to withstand strong winds. If you have a choice, sandy soils are not recommended, as they are easily uprooted in loose soil. Rich soil is important, when growing giant varieties.
Contrary to it's name, we found they will tolerate some shade as we put them against an east wall of our house every year. However, they will grow their best in full sun.
Deep roots help sunflowers to withstand most droughts. They will benefit from a dose of fertilizer when you apply it to the rest of your garden. Apply extra phosphorus and potassium when the flower bud begins to develop, to promote bigger blooms.
May 19th, 2016
Viewed 93 Times - Last Visitor from New York, NY on 03/26/2020 at 11:52 PM