Weigela has been a staple source of summer bloom in gardens for many years. With trailing foliage and pink-and-white tubular flowers, weigela attracts nectar-seeking birds and insects and makes a colorful, long-lasting display. Hybridization continues to concentrate on abundant flowering and increasing color contrasts. Once established, weigela takes care of itself in most soils, letting you relax and enjoy the flowers.
Select a location in your yard that gets at least six hours of sunlight a day for optimum blooming. Weigelas can tolerate filtered or partial shade but bloom best in a sunny spot. Remember to allow adequate space in locating weigela; at maturity some grow to 8 feet in height and the same in width. To save constant pruning, allow room for expansion when you plant (this may mean locating the shrub farther from your foundation and low-lying windows than you had originally planned).
Select a shrub in early spring or mid-fall, so that it can establish itself in cool soil. Look for bushy, rather than leggy, specimens (pruning long trailing branches in the spring diminishes blooms).
Dig a hole twice the depth and circumference of the plant's root ball. Fill the hole with water and check drainage; water sitting in the hole half an hour after you have filled it suggests heavy soil. For healthy root development in hard-packed or heavy-clay soils, mix soil from the hole with an equal volume of peat moss, shredded bark mulch, or loose top-soil. Line the hole with this soil mixture and seat the plant so that the top of the root ball is 1-2 inches below ground level.
Make a decision before planting. Some gardeners counsel loosening and leaving burlap wrapping around the root ball; this, they suggest, prevents damaging delicate new roots when planting. Others assert that even biodegradable burlap inhibits settling in. If you decide to leave burlap, make certain it is not plastic-coated, and loosen it so roots can stretch out.
Water the shrub right after planting, and tamp down the surrounding soil with your foot. This seats your plant securely and prevents the accumulation of air-spaces under the soil that can dry out or kill roots.
Continue to provide regular watering for at least six weeks. A goal of one inch of water per week (rain and hose combined) will help your beautiful new shrub get established.