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Dr Jassy Drakulic, the fungus evangelist

As a senior plant pathologist at the RHS, Jassy focuses her research on honey fungus in UK gardens, but is perhaps most influential as an advocate for garden fungi as friends, not foes

Fungi are fashionable – should we embrace that?

If done in the right way it can be lots of fun. However, some popular mushroom-growing kits on sale contain non-natives that could threaten our

native fungi. For example, lion’s mane mushrooms are currently trendy because of claims that they can boost brain function, and golden oyster mushrooms are a culinary craze, but both have the potential to be dangerously invasive if grown outdoors.

Dr Jassy Drakulic

So is it better to grow mushrooms indoors?

We do grow some fungi outdoors at RHS Garden Wisley, following the rule to avoid the invasive and exotic. If you’re planning to grow them outdoors, choose reliable common species, such as grey oyster (Pleurotus ostreatus), sourced as locally as possible.

Are naturally occurring mushrooms a problem in gardens?

In this country there seems to be a general fear that all fungi are poisonous and damaging pathogens. The majority of fungi are neither of these things. It’s safer to handle any of our native fungi than it is to touch many common garden plants, provided you don’t have an allergy to spores or a compromised immune system. Similarly to plants, some fungi are poisonous to eat, so if you are picking them to cook you need to be careful to identify them correctly.

What are the benefits of growing mushrooms?

Even if you don’t want to eat fungi, they can greatly contribute to the biodiversity of your garden, as well as soil and plant health. Incorporate them into your design by edging ornamental beds with fungus logs instead of regular timber and, when you’re mulching, choose a fungal-inoculated mulch. In fact, if you garden sustainably – with log stacks, leaf piles and plenty of mulch – you are probably already creating the right environment to encourage the growth of wild fungi and you will get brilliant results because you will be working with the natural populations of fungi in your immediate area.
 
Laetiporus sulphureus, a ‘problem’ bracket fungus

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