How to Combine Sunflowers

Choose an area to plant the sunflowers. Pick a place with well-drained soil and full sun. Add 3 to 4 inches of compost to the top of the soil, and work it into a depth of 8 to 10 inches.

Select what kind of sunflowers you want to plant -- edible sunflowers, cut sunflowers or a combination of both. Decide how tall you want the sunflowers to grow. Choose sunflowers based on color. Colors of sunflowers include dark red, light yellow, yellow, brown, bronze, burgundy, mahogany and white, according to the University of California, Davis.

Some cut sunflower types are: Bright Bandolier is 5 to 7 feet tall with red and yellow flowers. Lemon Éclair is 4 to 6 feet tall with light yellow flowers. Teddy Bear is only 1 ½ feet tall with double yellow flowers.

Some seed sunflowers are: Russian Giant grows 10 to 15 feet tall with 1 foot flower heads. Kong grows 10 feet tall with 1 foot flower heads and Sunspot grows 2 feet tall with 10 inch flower heads. (Ref 2)

Plant the sunflowers. Plant taller and larger varieties in the back. Dig holes 1 inch deep for each seed. Space the large seeds about 1 to 2 feet apart. Place the smaller sunflowers in front of the larger ones. Space the smaller seeds 6 inches apart. Cover the seeds with soil and pat the soil down. Water the soil for 3 to 5 minutes.