Dropped leaves and speckled dots indicate a thrips infestation. Luckily, there is plenty you can do about it

What’s the problem?
The leaves of my 40-year-old rubber plant are speckled with tiny black…

Corking is the most likely culprit, but it could be scale insects or fungus. Here’s how to check

What’s the problem?
My prickly pear (Opuntia) cactus is developing raised brown patches on both sides …

It’s actually a euphorbia, and some careful pruning will solve your problem – and result in a more attractive plant

What’s the problem?
I’ve had this cactus for many years, but it keeps getting talle…

It’s a buildup of mineral salts from hard tap water or fertiliser. Switching to rainwater or filtered water, and feeding only in spring and summer, will help

What’s the problem?
There is a chalky whi…

These are the fruiting bodies of fungi that live in compost. They are toxic if eaten but not harmful to plants

What’s the problem?
I’ve noticed tiny mushrooms popping up in my houseplant’s soil. Are …

Don’t panic! This plant has a natural seasonal rhythm, so resist the urge to overwater when it’s bare

What’s the problem?
My Euphorbia ritchiei sprouted a leaf, but it was accidentally knocked off an…

Tiny insects called thrips feed on the leaves, weakening the plant. Here’s how to discourage them

What’s the problem?
My peace lily has recently developed silver and grey streaks on its leaves. It ha…

All plants need a little light in their lives, but some can thrive even in the shadiest spots

What’s the problem?
We moved house two years ago, and some rooms in our new home have very little natural…

Don’t be overly cautious when watering Rhipsalis – to thrive it needs regular hydration and good drainage

What’s the problem?
My mistletoe cactus (Rhipsalis) thrived for more than five years, but re…

Strangely, this plant benefits from mild stress and ‘benign neglect’. So limit the nutrients and watch it flower!

What’s the problem?
My Hoya carnosa cutting, taken from my father’s treasured plant, …