Why rhododendron leaves curl in the cold

Why rhododendron leaves curl in the cold

On a January morning, a rhododendron can look as if it has lost its nerve. Yesterday the leaves were broad, glossy, and almost tropical in their confidence. Today they hang like narrow green cigars, each one drooping from the twig and curled along its length as if the whole shrub has tightened itself against the cold. It is an alarming…

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The brown dots under fern leaves are not pests

The brown dots under fern leaves are not pests

On a January windowsill, a fern can look like the most innocent plant in the house. Green fronds, soft shadows, a pot that asks mostly for humidity and restraint. Then you turn one frond over and find rows of brown dots underneath. They can look alarming if you were not expecting them. The dots may be round, rusty, tan, black,…

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Why fruit trees count winter before they bloom

Why fruit trees count winter before they bloom

On a cold January morning, a fruit tree can look almost empty. The leaves are gone, the grass is flattened, and the branch tips seem to be holding nothing more interesting than brown dots. It is easy to walk past an apple, peach, plum, cherry, pear, or blueberry and think the garden has become a diagram of waiting. But those…

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