Sunflowers grow best in locations with full sun. They are remarkably tough and will grow in any kind of soil as long as it is not waterlogged. They do fine in soils that are slightly acidic to somewhat alkaline. Once sunflowers get started, they will tolerate drought as befits plants whose ancestors grew happily in dry prairie regions. They are very easy to grow that they often plant themselves, arising unbidden beneath a bird feeder.
Caring for Sunflowers
• While the plant is little, water around the root zone, about 3 to 4 inches from the plant. To protect the plant, it’s going to help to place snail or slug bait around the stem.
• Once the plant is grown completely, water deeply though infrequently to encourage deep rooting. Unless the weather is exceptionally wet or dry, water once every week with several gallons of water.
• Feed plants only sparingly; overfertilization can cause stems to interrupt within the fall. We can add diluted fertilizer into the water, though avoid getting the fertilizer near the plant’s base; it may help to build a moat in a circle around the plant about 18 inches out.
• Tall species and cultivars require support. Bamboo stakes are an honest choice for any plant that features a strong, single stem and wishes support for a brief period of our time.
Cutting Sunflowers for Bouquets
• For indoor bouquets, cut the most stem just before its bud features a chance to open to encourage side blooms.
• Cut stems early in the morning. Harvesting flowers during the middle of the day may lead to flower wilting.
• Handle sunflowers gently. The flowers should last at least a week in the water at room temperature.
• Arrange sunflowers in tall containers that provide good support for their heavy heads and alter the water a day to stay them fresh.
Sunflower seeds, leaves, and stems emit substances that inhibit the expansion of certain other plants. Sunflower seeds are regularly used in many ways as bird feed, toxins from the accumulated seed hulls eventually kill the grass below. Harmless to animals or people, the toxins eventually biodegrade in the soil.