When you've always known deciduous trees to drop their leaves in winter, seeing one that hasn't can be unsettling. Here's why trees may hold onto their leaves.

Walter Reeves explains why a river birch tree might be shedding lots of leaves and why a crape myrtle tree might be send up suckers.

Some trees are what are known as ‘evergreens’. As the name suggests, that means their leaves are green all the time and they don’t fall off. The reason for this is trees such as firs have a ...

If you grow and care for a magnolia tree, we want to help. So I spoke to some experts about why magnolia trees lose leaves, when it should be worrying, and what can be done to alleviate the problems.

When the trees lose their leaves, a chemical called abscisic acid (ABA) is produced in terminal buds—the part at the tip of the stem that connects to the leaf. ABA is produced in both deciduous ...

Leaves that turn yellow and drop might mean you are watering too much … or too little. “It’s frustrating,” said Strnad. “Plants are living things. So nothing is ever straightforward.

There are only a few trees native to Australia that are deciduous — that is, they lose some or all of their leaves, for a part of the year — and that makes us pretty unique.

Trees offer some hope in the face of climate change. What's more, growing research suggests these carbon-guzzling natural wonders deliver countless health benefits, too. But, while that's a boon ...

Great question! The short answer is that leaves fall off trees when they aren’t doing their job any more. A leaf’s job is to turn sunlight into food for the tree. To do this, the leaf needs water.