How to Troubleshoot Sunflower Growing Problems

Control weeds with herbicides from Lowe's, Home Depot or a nursery. Although sunflowers are very strong plants, they are in danger the first weeks after planting if weeds overpower them.

Buy an herbicide that is safe to use on sunflowers. Treflan, Prowl, Sonalan and Eptam are safe to use on sunflowers. A few weeds should just be pulled by hand.

Destroy harmful insects like grasshoppers, caterpillars and moths. Moths develop larvae quickly and can cause some severe damage to the plant. Purchase organic pesticides to get rid of insects with proven brands like Asana, Warrior, Striker and Endosulfan.

Protect your sunflowers from birds. As the sunflower matures some of the seeds will start to fall off and attract birds. Lure the birds away from your plants by sprinkling extra seeds away from the sunflowers. Try covering the head of the sunflower with silk stockings to collect the falling seeds where the birds can't get them.

Stop the invasion of fungus in the sunflowers with fungicide patches. Excessive moisture sometimes causes harm to the seeds by developing fungi.

Plant the sunflowers only every three to four years to control leaf diseases.