Azaleas and rhododendrons may be transplanted at any time during the growing season, but they transplant most successfully during fall or early spring, when they are dormant and temperatures are cool. If you need to reduce height, prune after flowering in the spring.
Otherwise, just remove dead, damaged, or diseased branches at any time of year. On young and old plants, simply snap off spent flower stalks by bending them over until they break away from their stems. Be careful not to damage growth buds at the base of each flower stalk.
It blooms mid-season with violet-blue flowers. Zones 7 to 9. Zones 5 to 8. Pale pink flowers bloom in mid-season. It grows to 4 feet and bears deep purple-pink flowers.
Zones 3 to 8. It bears small, light purple flowers. Excellent in the front of a border or in a rock garden. Share This Posting.
Let's Grow Green Together! Contact Us. Proper soil preparation before planting, along with regular mulching with organic material during the growing season means extra fertilizer is usually unnecessary.
If you think your soil is no longer up to par, apply a fertilizer designed for acid-loving plants in late winter or early spring. Zones: Flower: Double-petaled, soft pink flowers also available in purple. Zones: Flower: Red also available in lavender, white, hot pink, and double-petaled medium pink.
Zones: Flower: Color phases through red and soft pink to white. Zones: Color: Lavender-pink flowers with deep purple-green leaves. Zones: Flower: Sweet pink flowers with greenish-yellow markings in throat.
Zones: Flower: Funnel-shaped and lavender-pink with up to 20 blooms per truss. Zones: Flower: Pink funnel-shaped blooms form on a large truss. According to the National Capital Poison Center, serious poisoning is unlikely when small pieces of rhododendron or azalea are eaten.
However, life-threatening symptoms can occur when large amounts of these plants, or honey made from them, are consumed. The Center recommends watching children and pets closely when outdoors to prevent this from happening. Wherever soil tests neutral to alkaline i.
When the pH is too high, their leaves turn yellow. Pick a rhododendron variety that has been proven hardy in your area and plant it in a location with an eastern or southern exposure.
Get plant information, gardening solutions, design inspiration and more in our weekly newsletter. More about the newsletter. Copyright I know the pine needles are good for them. I live in Warminster, Pa. I believe my home is positioned southeast. My front door faces east and I have full sun from sunrise till about PM.
There is corner at the end of my porch which is bare. My plans were to put in a rhododendron bush in that spot. My daughter tells me they are shade plants. Who is right? I read somewhere these plants need 6 hours of sun. Thank you for your help. I forgot to ask in my previous comment, what time zone do I live in? I always planted my annuals after Mother's day because I was not sure of my time zone.
Please see the Planting section of this page above for advice on where to plant rhododendrons and what kind of lighting they prefer. You are likely in Zone 7a, which gives you a lot of options when it comes to gardening!
Skip to main content. You are here Gardening » Growing Guides. By Catherine Boeckmann. Buying Plants When shopping for rhododendron or azaleas, pay attention to when they flower. Early varieties can blossom in March, late ones into July or even the fall. Buy plants that are a deep green not yellowed , not wilted, and well watered. Check the soil in the container with your finger and avoid plants that are bone dry.
Their thin petals shatter in the heat. In hot climates, buy plants in 3-gallon pots rather than 1-gallon pots. Small plants, with their fewer roots, struggle in the hot late spring and summer.
Choosing and Preparing a Planting Site Most large-leafed varieties require dappled shade; avoid deep shade or full sun. A sunny spot that receives a few hours of shade is perfect.
See regional guidelines below. Soil should be well-drained, humus-rich, moist, and acidic pH 4. Amend planting areas with compost, peat moss, or a substitute, only if your soil is poor. Learn more about soil amendments and preparing soil for planting. Azaleas and rhododendrons have shallow root systems and need moist soil and mulch to keep them from drying out.
Planting in Cold or Temperate Regions Zones 3 to 6 Plant in full sun to increase flowers and avoid mildew problems. Shrubs need a minimum of 6 hours of full sun daily. Plant on the sheltered side of a windbreak. If subjected to cold, dry winds, their leaves and buds dry out and die.
Planting in Warm or Hot Regions Zones 7 to 11 Plant in a site that receives afternoon shade, especially in hot areas. In tropical zones, azaleas will bloom in full shade. Space plants 2 to 6 feet apart, depending on their estimated mature size. Dig a hole as deep as the root ball and 2 times as wide. Set new plants so that their top roots are at soil level or slightly below. If you plant them any deeper, the roots may rot. Fill the hole half full with soil, then water it well to settle the soil before filling with remainder of soil.
A lack of water reduces flower-bud formation. In fact, this can keep the trunk too wet and encourage rot. Always leave a few inches around the trunk free of mulch. Fertilize azaleas and rhododendrons sparingly and only when flower buds swell in the early spring, even if they are fall bloomers. It is very beneficial to mulch around the plant at least out to the drip line. Do not pile the mulch right up to the trucks, leave 5" - 6" free of mulch. Mulching helps accomplish several important functions.
It helps in keeping the soil moist and cool. As it decomposes it provides nourishment for the plant. Competing plants and weeds have a more difficult time getting established so they are not taking the moisture and nutrients. Many materials are useful as mulch, such as fir bark, pine needles, wood chips, composted materials, etc. Ideally, the mulch should have loose texture to allow water and air to reach the root zone.
Chips, bark, compost materials, etc. They are not sufficiently decomposed if they heat up. American Rhododendron Society P. Plant Culture and Care. Landscape Use. Plant Selection. What To Plant Where.
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