Our guess would be that the zinnias have used up most of the soil’s nutrients in that spot. Before you seed next year, mix one or two inches of compost into the soil to add nutrients and loosen the soil a bit, which the zinnias should also appreciate. For this season, try adding some balanced fertilizer and see if that improves blooms.
Our guess would be that the zinnias have used up most of the soil’s nutrients in that spot. Before you seed next year, mix one or two inches of compost into the soil to add nutrients and loosen the soil a bit, which the zinnias should also appreciate. For this season, try adding some balanced fertilizer and see if that improves blooms.