Rhododendron 'Capistrano' is a broadleaf evergreen rhododendron grown for its unusual soft yellow, frilly spring flowers and its dense, deep green foliage that keeps your garden looking full year-round. You can use it as a specimen, a foundation shrub, or in groups where its rounded habit creates structure even when it is not in bloom.
At maturity it typically reaches about 72-96 inches tall, with a similar 72-96 inch spread. Give it room to develop its natural mounded shape, and keep it out of harsh, drying wind. If you want the best flower and foliage quality, aim for morning sun with afternoon shade, or dappled light; it can also grow in brighter locations in cooler climates when soil moisture is steady.
Plant in well-drained, acidic, organic-rich soil. Set the root ball slightly high, then mulch to keep roots cool and evenly moist. Water deeply during dry periods, especially while it is establishing. Avoid heavy cultivation around the shallow roots, and keep mulch off the stem to reduce stress.
Prune only as needed right after flowering to shape or remove winter-damaged wood. For a thicker plant, you can pinch or lightly trim new growth once it has elongated. With the right siting and consistent moisture, this rhododendron rewards you each spring with cheerful yellow trusses and dependable evergreen form.