Plants resistant to honey fungus
Honey fungus needn't mean the end of your garden – discover 12 honey fungus-resistant plants to grow.
Honey fungus forms an underground network of bootlace-like threads called rhizomorphs, which attack the roots of susceptible plants – usually trees and shrubs.
A number of honey fungus (Armillaria) species are present in the UK, but it's Armillaria mellea and Armillaria gallica that are usually encountered. The plants most commonly affected by honey fungus include lilac, viburnum, weigela, willow, cotoneaster, liquidambar, laburnum, rowan and forsythia, but this list is far from exhaustive. Annuals, biennials and herbaceous perennials are generally unaffected.
The first signs honey fungus might be present in your soil are a sparse crown, branch dieback, smaller than usual leaves, cracking and bleeding bark (particularly near soil level) and sometimes clumps of honey-coloured mushrooms. If you suspect honey fungus is present, have a look at the collar of the plant where the roots and stem meet, and look for signs of decay and white fungal material beneath the bark. Digging in the soil around affected plants will often reveal the dark, bootlace threads.
When honey fungus reaches a garden, the consequences can be dramatic, as it has the ability to kill old and majestic trees and shrubs, which can be a real issue for orchard owners.
While honey fungus will prevent you from growing many plants (at least for a few years), there are just as many, if not more, plants to replace them with. These include beautiful trees, shrubs and perennials.
Discover some of the many lovely plants resistant to honey fungus, below.
Japanese quince
Not to be confused with the edible quince, Cydonia oblonga, which is a small tree, the Japanese quince (Chaenomeles japonica) is a wall shrub or hedging plant usually grown for its intense orange-red flowers in early spring. It's best grown in a sunny or partly shaded spot in moist but well-drained soil.
Phlomis
Phlomis are among the best plants for winter interest, providing tiered seedheads and evergreen foliage. While in bloom, the flowers are a magnet for pollinating insects, particularly bumblebees. Some of the most popular phlomis to grow include Phlomis fruticosa, Phlomis russeliana, Phlomis longifolia and Phlomis tuberosa.
Perovskia
Like phlomis, perovskia is a member of the mint family, Lamiaceae, whose members seem to be generally resistant to honey fungus. It's a fantastic sub-shrub that provides plumes of lavender-coloured flowers in late summer and autumn, and holds its structure into winter. A good choice for poor soil.
Artemisia
You'll most often spot artemisias like 'Valerie Finnis' and 'Powis Castle' brightening up sunny borders with their silvery foliage. They're easy to grow, but do require full sun to stop them becoming lanky, and well-drained soil to prevent die-back.
Box
Fortunately, box plants aren't troubled with honey fungus but they are currently prone to box blight and box tree caterpillar. However, if you've found your box plants affected by either blight or box moth, you could consider one of the many alternatives to box.
Fothergilla
Fothergillas are robust, medium-sized shrubs from North America, with fragrant, bottlebrush flowers in spring and summer. What's more, before the leaves fall in autumn they turn vibrant shades of yellow, orange and red. Great for a moist, humus-rich soil in partial shade.
Luma
The Chilean myrtle, Luma apiculata, is a small evergreen tree, bearing fragrant white flowers in summer. It has all-year-round interest, as its cinnamon-coloured bark peels as it grows, revealing paler bark beneath.
Salvias
Salvias have mercifully proven to be resistant to honey fungus. There are lots of beautiful types to grow, including herbaceous and shrubby types.
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