What is PJM rhododendron?
PJM Group is a series of rhododendron hybrids that resulted from crosses between R. carolinianum and R. dauricum var. sempervirens. These hybrids are compact, rounded, small-leaved, evergreen shrubs that generally grow to 3-6′ tall and are noted for having exceptional winter hardiness.
Are there blue rhododendrons?
There are many rhododendrons with blue leaves, well almost blue, closer to dark greenish blue, but quite evident in the garden among the other shades of green.
When to trim rhododendron?
Early spring generally is best because the new growth then has a full season in which to develop and mature. Pruning immediately after the blooming period is standard practice.
What does rhododendron symbolize?
What Does the Rhododendron Flower Symbolize? Because the rhododendron is native to sunny areas, it can bring light and warmth to any bouquet. It symbolizes beauty and energy and can help tie a bouquet together with its symbolism of optimism and cheer. It can also serve as a symbol of love and general positivity, too.
What is the easiest rhododendron to grow?
‘Nova Zembla’ is an easy to grow Rhododendron with bright red flowers that contrast well against the dark green leaves. It’s a woodland native that makes a great foundation plant and the brightly-colored flowers attract butterflies and hummingbirds. One of the most popular varieties around!
Do PJM rhododendrons lose their leaves in winter?
Rhododendron P.J.M has a distinctive lavender-pink flower color and a burgundy fall and winter leaf color. Some types of rhododendrons that lose their leaves in winter are commonly called azaleas.
Are there purple rhododendrons?
Rhododendron x ‘Lee’s Dark Purple’ (H-2) A hardy, compact shrub valued for its deep purple buds that open to large trusses of violet-purple flowers in late May. Dark green leaves with undulating edges nicely frame the colorful spring flowers and provide evergreen interest year-round.
What are the purple rhododendrons called?
Rhododendron impeditum (H-2)
A dwarf flowering evergreen shrub with a tight, compact form and sensational spring flowers. This tiny plant displays gorgeous clusters of bright purple flowers in late spring.
Can rhododendrons be cut back hard?
Should you have an old, established rhododendron that needs to be given a new lease of life, heavy pruning is possible. Choose a frost-free day in February or March and cut back branches hard to one of the tiny, dormant buds. If necessary, you can coppice the plant down to around 150cm tall.
What happens if you don’t deadhead rhododendrons?
If you forget to deadhead your rhodys don’t worry, your plant will continue to produce about the same amount of flowers next year as it did this year. But, if you want to produce more flowers deadheading will help you to achieve this.
What is the best place to plant a rhododendron?
Site selection
Choose a site with dappled shade in sheltered conditions. Avoid deep shade beneath other trees. Most rhododendrons will tolerate a more open site if sheltered from cold, drying winds. Dwarf alpine species will tolerate full sun provided the soil does not dry out.
What is rhododendron good for?
Rhododendron is one of the naturally occurring plants which possess various health benefits, such as prevention and treatment of diseases associated with heart, dysentery, diarrhea, detoxification, inflammation, fever, constipation, bronchitis and asthma [4]. The leaves possess effective antioxidant activity.
Where is the best place to plant a rhododendron?
Choose a site with dappled shade in sheltered conditions. Avoid deep shade beneath other trees. Most rhododendrons will tolerate a more open site if sheltered from cold, drying winds. Dwarf alpine species will tolerate full sun provided the soil does not dry out.
How long does it take for a rhododendron to grow full size?
Rhododendrons have no final size and can grow almost indefinitely. They range from dwarf, ground-hugging varieties which may reach 16 in. in 10 years (40 cm) to giant tree-like specimens as tall as 20 ft. or more (6 m). Both moisture and the length of the growing season will have a serious impact on their growth rate.
Can rhododendron survive a freeze?
Certain rhododendrons and deciduous azaleas can survive temperatures as low as -35°F (-37°C). It is normal for some rhododendrons to exhibit leaf droop and curl at around 32°F (0°C).; the lower the temperature the tighter the curl.
Can you keep a rhododendron small?
If not, Azaleas and Rhododendrons can be pruned to be kept small. Most varieties can be cut back if they get too large, except some species with smooth bark which will not regenerate. All small-leaved Rhododendrons (Lepidote Rhododendrons) and deciduous or evergreen Azaleas can be cut back or pruned.
How many colors of rhododendrons are there?
Leaf sizes range from less than 1/4 inch to almost three feet long, and they also appear in a variety of shapes: rounded, lance-shaped, and elliptical. The flowers may be white, red, pink, yellow, almost blue, purple, magenta, orange, and shades and mixtures of most of these colors.
Which rhododendron is best for shade?
The P.J.M group of rhododendrons are some of the most reliable shade bloomers. Because they do not develop seeds, the energy goes directly toward producing flowers. Within this group are varieties with pink-to-lavender blooms such as Elite and Waltham. Henry’s Red is the color its name implies.
Can you prune a rhododendron to keep it small?
Therefore, as the flowers fade, trim no more than 15 to 20 inches (38-51 cm.) off the strongest branches. Cut back the plant to expose the inner branches. Follow the branch down to the last whorl of leaves you want to keep and cut just above those leaves, about 1/4 inch (6 mm.)
What happens if you don’t Deadhead rhododendrons?
Should I cut the dead flowers off my rhododendron?
Yes. Deadheading,or removing old spent flowers, is beneficial for lots of plants including rhododendrons and azaleas. This puts more energy into new bud production and leaf growth rather than seeding. Remove spent flowers by snapping off or cutting away the flower head.
Can you cut rhododendrons to the ground?
In severe cases, you can sometimes cut your rhododendron to within 6 inches of the ground. Another type of rejuvenation pruning consists of cutting the entire plant to within 6 inches of the ground.
What is the problem with rhododendrons?
These include fungal leaf spots, leaf and flower gall, root rot, oedema, leaf flooding, winter injury, and chlorosis.
Do you deadhead rhododendrons?
When the petals of the flowers wilt or fade you should start to deadhead your rhododendrons. But, rhododendrons do not have to be deadheaded every year. If you want to encourage more blooms then it is a good idea to deadhead annually.
Do rhododendrons spread?
How does Rhododendron ponticum spread? This invasive shrub spreads by prolific seeding and then layering of branches. This eventually forms a closed canopy that shuts out most light and destroys the rich biodiversity of our woodlands.