'Presto' zonal geraniums send up clusters of semi-double blooms that rise above compact mounds of dark green foliage. 'Presto Dark Red' is absolutely stunning in mass plantings, borders, or container planters. Deadheading spent blooms will keep new flowers coming right up until frost and is well worth the effort. Sunshine, water, and fertilizer will keep this drought-tolerant annual looking its best. Beware budworms however, as they love geraniums. If the foliage is healthy but the plant stops flowering, look for telltale black droppings/spots on the leaves or tiny green caterpillars. We've got a foliar spray that will have your geraniums blooming again in no time!