Why are my sunflower seeds empty inside? Did I harvest too soon? Plant was really drooping and seeds are black with stripes and huge. My first year growing sunflowers so I want Expert Gardener Smooth Nitrile Gardening Gloves, Size L, Size: Large Wildflower Zone 6 Varieties Selecting Wildflowers For Zone 6 Planting Gardening Know How Raised Garden Bed Planter Box with Trellis, Self Watering Plant Pot with Tomato Cage and Water Level Monitor for Climbing Vegetables, Plant Pots for Ants in Your Plants? Here's How to Kick Them Out Naturally! unlimitedgreens