Morton Arboretum

As the days grow shorter in autumn and the gardening season wanes toward winter, it's time to think about spring! That's because fall is the time to plant spring-flowering bulbs....

When does a tree or shrub need a shave? Often, when you're planting it. Trees and shrubs that are sold in large pots often have roots growing in the wrong...

Many troubled trees suffer from the same long-term trauma: They were planted too deep. "It's the most common underlying cause of tree problems," said Sharon Yiesla, plant knowledge specialist at...

They're everywhere. They're ugly. But they're basically harmless. The black blotches that we often see on maple leaves in late summer are collectively called "tar spot," according to Julie Janoski,...

It's always sad to see a tree that utility crews have been forced to prune drastically to keep its branches safely clear of a power line. That sad sight can...

Many homeowners struggle with the same question: How much to water? "The simple answer is that your plants need enough water in the soil for their roots to absorb what...

Sometimes a tree starts to look more like a shrub, with stems sprouting from the base of the trunk. These stems are called "suckers" because they compete with the main...