Easy A Gardener's Visual Guide to When and How to Prune Everything, from Flowers to Trees. Tulip Winter Aconite Click here for a printer friendly version of this page. These South African natives will grow in most any garden with minimum care.
Colors range from white, subtle pinks and brilliant reds to purplish black.
In Zones 9-10, geraniums grow outdoors from year to year with little attention and become shrubby plants 4 to 5 feet tall, but in frost zones they are treated as small, delicate annuals. Ivy and common geraniums make superb bed, border and pot plants because they bloom throughout the garden season. The trailing stems of ivy geranium make it particularly effective in window boxes and hanging baskets or as a flowering ground cover. The Martha Washington is a less successful summer-flowering plant in many sections of the country since it needs temperatures below 60 to bud. It is usually grown by florists as a flowering pot plant for Mother's Day and Memorial Day.