Most gardeners wonder when burning bush turns red and the answer is mid to late autumn each year. Plants show their scarlet color from October through November in most areas. The exact timing depends on your climate zone and weather patterns.
In my experience, burning bush fall color timing shifts quite a bit based on where you live in the country. My plants in zone 5 start changing in early October most years. Friends in zone 8 down south wait until November to see their shrubs change color.
The science behind this color change involves shorter days and cooler nights working together. As days get shorter, the plant slows down making green chlorophyll in its leaves. Cool temperatures at night then trigger red pigments to build up in the leaves.
USDA zones 4 and 5 see burning bush autumn color the earliest in most years. Plants in these cold areas may start turning in late September if frost comes early. The color peaks through October and leaves drop by early November when hard freezes hit.
Zones 6 and 7 fall right in the middle for burning bush red leaves season timing each year. Expect color to start building in mid October and peak by late October or early November. A warm fall can push this back by a week or two from year to year.
Zone 8 and warmer areas see the latest color change because nights stay warm longer into fall. Your shrub may not start changing until late October or even early November. The color often looks less bright in warm zones since cool nights help make deep red pigments.
Watch the outer branches that get the most sun for the first hints of color change each fall. These leaves turn before the ones in shade near the center of the plant. When you see pink or red on the tips, peak color is about two weeks away for most plants.
Weather swings can speed up or slow down the color change from year to year in any zone. A sudden cold snap in early fall pushes color faster than a slow cool down does. A late warm spell can delay things and sometimes cut the color show short.
The best color comes from a fall with warm sunny days and cool nights in the 40s or 50s range. This combo lets sugars build in the leaves during the day and triggers pigment production at night. Take photos when color peaks since leaves drop fast once hard frost arrives in your yard.
Read the full article: Burning Bush Plant Care and Growing Guide
