Q: In my morning walk around the garden, I found an unusual pattern on the leaves of my Arabian jasmine. Do you have any thoughts on what might have caused this? A: This meandering or serpentine ...

Not everyone is thrilled to see the mottled or speckled look of leaves with splashes and splotches, or ones marked with pretty patterns or crisply edged with yellow or white margins. The core of the ...

Most leaves are green due to the pigment chlorophyll, but other colours, such as oranges, reds and blues, may also be present due to less efficient photosynthetic pigments like anthocyanins, carotenes ...