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Category: General gardening topics

Why is my rhododendron dying?

Why is my rhododendron dying?

It’s quite difficult to kill rhododendrons, so are you sure that your rhododendron is dying? Many problems with rhododendrons can be fixed, so don’t give up on your plant yet. Here are some of the common problems with rhododendrons and what to do about them. Growing environment Planted in the wrong environment in the wrong soil PH rating Rhododendrons like moist but well-drained soil and to be in partial or dappled shade. They do need sunlight but not hours of…

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Why is my rhododendron leaves turning yellow?

Why is my rhododendron leaves turning yellow?

The reasons that your rhododendron may be going yellow are primarily linked to its growing environment and how you are treating the plant. Here are the main reasons for this problem and what to do about them. Firstly, I have found the most common reason for rhododendron leaves turning yellow is the soil not being acidic, which leads to yellowing leaves. I recommend testing the soil ph with a soil testing kit, and you need a soil ph of below…

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What’s eating my rhododendron leaves and buds?

What’s eating my rhododendron leaves and buds?

Are you sure something is eating your rhododendron leaves? Pests and diseases, the weather and the plant’s growing conditions can all make your rhododendron leaves vulnerable. While some of these problems do actually eat the leaves, the others just make it look like the leaves are being eaten. Here’s what to look for and what to do about the problems. First of all, check out my article Rhododendron pests and diseases. This gives an insightful view of the most common…

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When and how to prune rhododendrons

When and how to prune rhododendrons

Rhododendrons don’t need a lot of pruning; even as a professional gardener, I’ve not pruned rhododendrons too often, with the exception of cutting back overgrown or dead sections. You can prune rhododendrons to keep them in shape, remove spent flowers to serve energy, rejuvenate the plant or remove diseased or dead bits. Most pruning is best down bwteen late winter after the first frost and right up to the last frost in spring. This is when they are technically dormant…

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Why are my rhododendron buds falling off?

Why are my rhododendron buds falling off?

The main reason that rhododendron buds are falling off is usually drought or lack of water when grown in pots. Usually, they develop buds around June and July, so ensure they have enough water during this time as they form. More on this below. Drought is not the only cause of bud drop, so in this article, I also identify other causes and what you can do about all of this. Not getting enough water Rhododendrons usually develop flower buds…

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How to propagate alliums by division and seed

How to propagate alliums by division and seed

The two ways to propagate alliums are through dividing the bulbs and through collecting and sowing the seeds. I cover both these methods in this article. Dividing the bulbs Propagate alliums by dividing the bulbs in early to mid-autumn. Wait until the flowers and leaves have died back. Dig around the plants you want to divide with a trowel. Dig at about 8cm from the bulb clump. It’s a good idea to take these from all around your allium bed….

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When and how to plant and grow alliums

When and how to plant and grow alliums

You should plant your alliums sometime between the start and the middle of autumn but you can also plant them in spring. This article covers how to plant alliums in the ground and also in pots. First things first, plant them in a sunny position, don’t plant them too shallow or too deep, 3-4 times the depth of the bulb and but large quality bulbs. Let’s get started! When to plant alliums Planting alliums in the fall gives them enough…

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Why are my alliums not flowering?

Why are my alliums not flowering?

From personal experence, I have noticed that alliums not flowering is usually caused by problems with the bulbs themselves, what you do with them and from pests and disease. Here are the main causes of non-existent allium flowers and how to deal with them. See also When and how to plant and grow alliums for more information on how to care for your allium plants. Allium bulbs Small and immature bulbs Young or small allium bulbs often do not flower…

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How to prune Photinia Red Robin

How to prune Photinia Red Robin

Photinia Red Robin is one of those plants that you don’t have to worry that you’ll over prune. I usually recommend that you regularly prune photinia to keep it to the shape and height that you want. And also to stop the unpleasantly scented white flowers from blooming or to prune back a photinia that has been badly infected with black spot disease as discussed here. Why prune photinia Red Robin? This shrub grows very actively, often increasing 30cm (1ft)…

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How to grow photinia from cuttings

How to grow photinia from cuttings

To grow photinia from cuttings is a straightforward task. Just follow these steps for a good chance at successfully propagating this plant in this way. I have had the most success with Photina cuttings when taken in late summer or early autumn (Fall) where the cutting is taken from the current season’s growth and the base of the cuttings will be hard and the tip soft. You can also take them as softwood cuttings. Prepare the pots and soil I…

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