mountain laurel leaves vs rhododendron

The underside of the leaves are different. Mountain laurel's are smooth and a paler shade of green than their top side. While Rhododendron's leaves are also a paler shade of green on the underside, in addition, they are covered in a brown fuzz. ... Rhododendron leaves are longer than Mountain laurel leaves.

Are mountain laurel and rhododendron the same?

Mountain laurel (Kalmia latifolia) and rhododendron are both members of the heath family (Ericaceae.) Sometimes called calico bush, mountain laurel is one of about seven species in the genus Kalmia. The genus Rhododendron is much larger, containing hundreds of species, including azaleas and rhododendrons.

What's another name for mountain laurel?

Kalmia latifolia, commonly called mountain laurel, calico-bush, or spoonwood, is a broadleaved evergreen shrub in the heather family, Ericaceae, that is native to the eastern United States.

What do rhododendron leaves look like?

The flowers are tubular-, funnel-, or bell-shaped—and often fragrant. The leaves of the smaller azalea are usually pointed and narrow; the leaves of the rhododendron are generally large and leathery. ... They come in many flower colors, including pink, red, white, yellow, and purple.

Do mountain laurels lose their leaves in winter?

Extreme cold is another reason for mountain laurel leaf drop. In areas that get sustained freezes, plant mountain laurels in a slightly sheltered location. Lack of water will also cause dropped leaves. Provide deep watering once per week in dry conditions.

Is Mountain Laurel poisonous to humans?

From leaf to stem to branch, mountain laurel is poisonous in all its forms. The U.S. Department of Agriculture says it can even be fatal to both humans and some animals.

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.

Do hummingbirds like mountain laurel?

This plant attracts hummingbirds, butterflies, and bees (although their honey will be toxic and should be avoided). Protect the delicate fibrous mountain laurel roots with a two-to-six-inch layer of mulch.

Is Mountain Laurel poisonous to dogs?

Mountain Laurel: This beautiful flowering plant can be quite toxic to both dogs and cats. The toxin associated with this plan results in abnormal functioning of muscles and nerves. Common symptoms include lethargy, drooling, uncoordinated walking, and a decreased heart rate.

What part of the mountain laurel is poisonous?

Toxicity. Mountain laurel is poisonous to several different animals, including horses, goats, cattle, sheep, and deer, due to andromedotoxin and arbutin. The green parts of the plant, the flowers, twigs, and pollen are all toxic, and symptoms of toxicity begin to appear about 6 hours following ingestion.

Are coffee grounds good for rhododendrons?

Fresh Coffee Grounds for Acid-Loving Plants

Your acid-loving plants like hydrangeas, rhododendrons, azaleas, lily of the valley, blueberries, carrots, and radishes can get a boost from fresh grounds. ... Fresh coffee grounds still have most of their caffeine content as well as the acid.

What would kill a rhododendron?

To begin with, excessive water kills about 75 percent of all rhododendrons purchased. Rhododendrons are fibrous, shallow rooted plants that need good drainage to perform well. Historically, gardeners have been told to dig a hole twice as wide and twice as deep as the root ball.

How many times a year does a rhododendron bloom?

Rhododendrons typically bloom for about three weeks in spring, according to Gardenia.net. But some rhododendron varieties bloom much earlier, even in winter, and some bloom as late as midsummer.

Do mountain laurels need full sun?

Mountain laurel will grow in USDA Zones 5 to 9 in deep shade to full sun, but it does best in moderate to partial shade. In deep shade it won't produce as many flowers and can become spindly. Too-bright sun can cause scorching of the leaves.

How often do mountain laurels bloom?

Mountain Laurel Flowering Season

Shrubs bloom anytime from mid-April to the summer solstice with May and June being the most common time for flowering. In the Deep South, in USDA zone 8, flowering commences in mid-April and peaks just before May 1. In zone 7, flowering starts around May 1 and peaks in the second week.

Why are my mountain laurels turning brown?

Why Mountain Laurel Leaves are Browning

Desiccation/winter burn – Brown leaves on mountain laurels can be caused by desiccation, which occurs when winter wind draws moisture from the tissues. If the plant is unable to pull moisture from the soil, the water in the cells isn't replaced and leaves turn brown.

Can Laurel kill you?

Common killer: Swallowing any part of the rose laurel can be deadly (Image: Getty) ... Swallowing any part can be deadly, especially for children. Even smoke from burning oleander can kill. The toxins cause abdominal pain, vomiting, diarrhoea, visual disturbances, rapid pulse and heart attacks.

Is it illegal to pick mountain laurel?

But there are no legal restrictions on the cultivation of mountain laurel." In addition, on public land in Pennsylvania, “cutting, picking, digging, damaging or removing, in whole or in part, a living or dead tree, shrub or plant” is illegal.

What animal eats mountain laurel?

Because these plants are consumed by deer only as a last resort, deer can actually promote the growth of these plants. By eating all the other plants, deer browsing eliminates the competition clearing the path for mountain laurel (and heath family) expansion.

What time of year should you plant rhododendrons?

In mild climates rhododendrons and azaleas can be planted almost any time of the year with reasonable success. In colder areas, early spring planting is recommended, with early fall planting being a second choice.

Are rhododendrons poisonous to dogs?

All parts of the rhododendron plant are toxic for dogs. Symptoms include gastrointestinal upset followed by weakness, paralysis, and abnormal heart rhythms.

Can you over water rhododendrons?

Too much water promotes root rot that can cause plant death. Too little water, and it feels like a dry sponge, and the plant will suffer and be badly damaged. ... Because of their shallow roots, little or no cultivation should be done around rhododendrons.