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Category: Gardening Articles

When and how to prune azaleas to ensure you don’t remove next year’s flowers

When and how to prune azaleas to ensure you don’t remove next year’s flowers

Azaleas don’t actually need pruning. However, here’s what to do if you ever need to remove dead or diseased branches, revitalise the azalea, control your plant’s shape or tidy it up a bit. Always use a light hand when you prune azaleas and always prune straight after they have flowered. Pruning too late in the season will remove the flowering shoots that will provide next year’s flowers. Personally, I NEVER prune Azaleas after the start of July. Sterilise your cutting…

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When and how to feed azaleas

When and how to feed azaleas

Azaleas don’t need much looking after and they are generally problem free with the exception of a few pests and diseases as discussed here. However, a shot of fertiliser in the spring sets them up for a good growing season. I also like to give them another feed as the flowers fade as I’ve found it really does help get the most out of them. When to feed azaleas I like to fertilise my azaleas both in pots and in…

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What’s eating my azalea leaves?

What’s eating my azalea leaves?

Various pests and even a few diseases may be eating your azalea leaves or at least giving the appearance that they have been eating your azalea leaves. I talk about bark scales, leafminers and caterpillars here, among other pests. To find out what to do about any of these, also read my Azalea Pests and Diseases guide, as I cover even more pests and especially diseases. If you have more of an issue with your azalea leaves dropping turning yellow…

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Identify Azalea diseases and pests and how to prevent and treat

Identify Azalea diseases and pests and how to prevent and treat

Azalea diseases and pests of various kinds affect azaleas, and some are more common and more of an issue than others. Common diseases include powdery mildew, leaf spot disease and rust. While Phytophthora root rot and Galls/canker as less common, they can be much more serious. Pests include the usual aphids, which can be treated with soapy water or pesticide bug killer if needed. Other pests also include scale insects, caterpillars, leafminers, roundworms and spider mites. I discuss each of…

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Why are my azalea leaves turning yellow and falling off?

Why are my azalea leaves turning yellow and falling off?

The main reason your azalea leaves are turning yellow is probably an iron deficiency caused by poor soils or not enough nutrients in the soil. This is usually linked to the soil not being acidic enough. Azaleas like Rhododendrons and Pieris need an acidic soil with a ph rating of pH 4-6 with pH 5.5 being perfect. Any above 7.0 is too high and considered alkaline and the leaves will turn yellow. Two other causes are a lack of water, you…

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Why are the leaves on my azalea drooping?

Why are the leaves on my azalea drooping?

The azalea leaves may be drooping due to disease or environmental conditions. The most common reasons are lack of water, especially in pot grown azalea, which need watering regularly. Be careful not to overwater, as this can also cause the leaves to droop and is usually an issue in poor draining soils. Evergreen varieties can also get drooping leaves caused by frost and cold weather, especially if it’s been mild for a while and then you suddenly get a sharp…

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How to revive a dying azalea by identifying symptoms and treat

How to revive a dying azalea by identifying symptoms and treat

Are you sure your azalea is dying? Many pests and diseases cause non-fatal issues to azaleas and I cover them here. This guide assumes you have watered your azalea as needed (not let it dry out) and is not too wet such as being planted in poorly draining soil, which leads to root rot or is planted in a container with no holes or is root bound and just needed potting on. But if your plant really is on its…

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Why is my azalea not blooming?

Why is my azalea not blooming?

If you’re not getting the glorious two-week display of blooms on your azalea, it may be due to disease or environmental factors. Here are the most common causes for your azalea not blooming and what to do about them. Too much nitrogen in the soil encouraging foliage only Your azalea may not be blooming because its environment has too much nitrogen. Maybe you’ve overdone this micro-nutrient in the fertiliser you fed your plant. Nitrogen is great for lush foliage growth…

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How to propagate rhododendrons from cuttings

How to propagate rhododendrons from cuttings

The best way to propagate rhododendrons is to take cuttings. It’s easy to take the cuttings, but it’s a long and fairly difficult process to grow them successfully. But that’s OK, just take lots of cuttings. Here’s how to do this. When to take rhododendron cuttings I have found that the best time to take rhododendron cuttings is during the warmer summer months. Aim for between the end of July and the middle of August in the UK. Taking them…

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Growing rhododendrons in pots

Growing rhododendrons in pots

Growing rhododendrons in pots can be done very successfully, especially if you carefully choose the variety you grow. Here’s how to have a display of these glorious plants in containers. Choose your rhododendron variety Look for a dwarf variety of rhododendron. I like ‘Ostbo’s Red Elizabeth’, Rhododendron yakushimanum cultivars, and the deciduous Rhododendron ‘Lutescens’. You can grow any Rhododendron in a pot for a shorter period of time, but they will quickly outgrow their pots, so choosing a smaller variety…

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