Why do some red maple trees have yellow fall foliage instead
of brilliant red? Although fall color will vary with different
environmental conditions, in many cases the yellow foliage of
these red maples is simply due to the genetics of the individual
tree. Unnamed red maple trees grown from seed are not always
brilliant red. They have highly variable fall color. If you want
a red maple with red foliage in the fall, choose named,
vegetatively propagated red maple cultivars such as Red Sunset,
Magnificent Magenta or Autumn Flame. October Glory has
outstanding foliage color but is late in acclimating for winter
and can be damaged by early cold snaps. However, even these
"good" cultivars will vary in the level of "redness" from year to
year. A number of things can reduce the intensity of color
including extreme heat or drought during the summer and cloudy
days and warm nights in the fall.
Nuisance
of the Week Archives
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Written by Ward Upham, Extension Associate
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