Care Sheets & Tips
RHODODENDRONS AND AZALEAS
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Where to Grow Rhododendrons should be planted where some sun is available to encourage bud formation and compact growth. Shelter rhododendrons from strong wind which desiccate the foliage, and provide shade during the hottest part of the day. Rhododendrons must be protected from the winter sun. Build a tent of burlap around your rhododendrons and fill the tent with leaves or straw. The leaf or straw mulch can also serve to shelter rodents from winter’s frigid temperatures so mouse bait should be placed around the rhododendrons to protect your plants from the animal’s tiny teeth! Azaleas should be planted in a sunny location but not in a location that is too dry because like rhododendrons, they enjoy lots of moisture. How to Plant Remove azaleas and rhododendrons from the plastic pot before planting. Acidic soil is required for rhododendrons and azaleas. At least half of the planting mix should consist of peat moss to help provide the acid condition. Dig a large hole and fill it with half topsoil and half peat moss. Water your plants well after planting and mulch bark chips. Moisture Rhododendrons and Azaleas do not like to dry out, therefore, your soil must be consistently moist but never soggy. Fertilizing Rhododendrons and Azaleas benefit from an application of acid fertilizers in the spring. Do not over feed and do not fertilize after June 30. Do not use aluminum sulphate to acidify the soil. Ordinary sulphur or ammonium suplhate is appropriate. A small amount of sulphur should be added to the soil each year to keep the soil acidic. Pruning Pruning is seldom required for your azaleas and rhododendrons. To increase bloom, you should deadhead the plants and pinch the tips of the new growth in June. Deadhead rhododendrons by breaking off spent flowers. Be careful of buds underneath the flower. To increase blooming in rhododendrons pinch tips of new growth in the spring. Companion plants that like the same conditions: Heaths and Heather, Mountain Laurel, Leucothoe, Bog Rosemary, Pieris, Bearberry and Blueberries. |
Rhododendrons are heavy flowering evergreen plants, which enjoy a sheltered and shaded location. Azaleas are also heavy flowering plants and enjoy a sunny or semi-shaded location.