Can I use Miracle Grow on rhododendrons?

Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food is a special plant food designed for acid-loving plants like azaleas, rhododendrons, camellias, dogwoods, magnolias, gardenias, orchids and all evergreens. It is rich in iron and other essential nutrients.

Which Miracle-Gro is best for rhododendrons?

A: Miracle-Gro Azalea Camellia Rhododendron Food can be used for any ornamental plant it is best suited for acid-loving plants.

How can I make my rhododendrons grow better?

How to Care for Rhododendron & Azaleas
  1. Mulch plants every spring with 2 to 5 inches of pine bark chips or pine needles to protect shallow roots and retain soil moisture. …
  2. Fertilize azaleas and rhododendrons sparingly and only when flower buds swell in the early spring, even if they are fall bloomers.

What plant food is good for rhododendron?

Rhododendron Fertilizer Schedule

At planting time, use 10-10-6 fertilizer before you water the plant in. In early spring, the rhododendron buds swell. At this time, apply a complete 10-8-6 fertilizer.

How do you help a struggling rhododendron?

  1. Prune away any dying tissue. …
  2. Spray the leaves and stem of your rhododendron plant with insecticides. …
  3. Move your rhododendron if you think it may be getting direct afternoon sunlight. …
  4. Change your rhododendron’s soil if you believe it retains too much water.

How do you revive a sick rhododendron?

  1. Step 1: Inspect the Leaves. Diagnose by checking the leaves, which will be very pale or yellow with dark green veins. …
  2. Step 2: Plant It Higher. Lift the rhododendron and reset it higher up in its planting bed if necessary. …
  3. Step 3: Minimize Cultivation. …
  4. Step 4: Watch Watering and Fertilizing. …
  5. Step 5: Test the Soil.

Why does my rhododendron look like it’s dying?

Answer: Rhododendrons and azaleas are susceptible to a fungal wilt disease called Phytophthora root rot. The Phytophthora fungus enters the roots of the plant from infested soil and clogs the water-conducting vessels of the plant. Symptoms include poor growth, rolling of leaves, and the eventual death of the plant.

What is the best time to fertilize rhododendrons?

Rhododendrons and azaleas prefer slightly acid soils. Fertilizer is best applied soon after flowering in the spring. Organic fertilizers are a bit more costly, but are released slowly and need to be applied less frequently than chemical fertilizers.

How often should you feed rhododendrons?

A good rhododendron fertilizer such as Millais Ericaceous Slow Release Feed applied annually in March and again after flowering in June is recommended to feed the plant all season.

Can you over fertilize rhododendrons?

Be careful to use only the amounts recommended for rhododendrons and azaleas, which do not need as much fertilizer as other plants. Excessive fertilization can result in damaged roots and leaves, and some rhododendron varieties can be killed with fertilizer.

How often should you water rhododendrons?

How to Water Rhododendrons. Rhododendrons are shallow-rooted plants that require water twice per week during the first growing season. Once plants are established, though, you should only have to water during dry periods (2 to 3 weeks without rain).

How do you keep a rhododendron blooming?

To maximize your spring display, always prune rhododendrons right after they finish blooming – before new flower buds form. Remove dead or damaged branches any time of year. Schedule any major pruning projects for late winter when the plant is dormant. Just remember that late-season pruning equals lost blooms.

Do rhododendrons prefer sun or shade?

Unlike many blooming plants, rhododendron does not like full morning sun in winter and does best when planted in dappled shade on the north side of a building. Growing rhododendrons are happiest in a location protected from the wind and not under eves of a building.

Can you put Miracle Grow on hydrangeas?

Miracle-Gro Water Soluble Bloom Booster Flower Food

This is an all-purpose blossom booster that’s suitable for use on a wide variety of perennial and annual blooming plants, including hydrangeas.

Is all purpose Miracle-Gro good for azaleas?

Product Description. Help acid-loving plants like azalea, camellia, gardenia, hibiscus, holly, hydrangea, orchids, rhododendron, and many others thrive with Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant food.

What do I do if my rhododendron won’t bloom?

Too Much Fertilizer.

Feed your rhododendron all you like in the spring, but by late summer, you need to cut back on both fertilizer and water to give the plant just enough stress to encourage blooming.

How do I make my rhododendron thicker?


The final thing you want to do is to pinch or snap off the new growth back when it’s a couple of inches long. This is the key step to developing the dense bushy plant that you are after. These plants often send out a single long new shoots with no branching.

Is blood and bone good for rhododendrons?

Rhododendrons do not need a rich soil. We recommend light application (i.e. a handful per average sized plant) of 2 parts blood and bone and 1-part superphosphate fertiliser, at the end of September and again in late January. DO NOT ADD FERTILISER TO THE SOIL WHEN PLANTING: peat/bark is all that is required.

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.

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. However, tomatoes do not like fresh coffee grounds; keep them out of that area of the garden.

Are Epsom salts good for rhododendrons?

Magnesium in the form of Epsom salts is sometimes recommended for rhododendrons. Magnesium is an essential element and lack of it will cause yellowish areas between the leaf veins on older leaves.

Why does my rhododendron have brown spots?

Brown spots on rhododendron leaves may not be a sign of disease. Rhododendrons can be affected by a condition called “physiological leaf spot.” This condition is caused by poor root health, improper irrigation as in over- or under-watering, drought and extreme heat exposure.

What kills 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.

Can a wilted rhododendron be saved?

Treating with a fungicide won’t help, but you could try to move the whole plant to higher ground or a raised bed to see if it can recover. Clay soil holds on to water, so if that’s what you have in your garden, be sure to add plenty of compost or pine bark to the new planting area.

Do rhododendrons have a lifespan?

The life span of a rhododendron depends on the variety, growing conditions, and quality of care, but most can live for many decades when well cared for and provided with ideal conditions. The blooms have a lifespan of two to seven months each year, depending on the specific variety.