Plants & Flowers That Change Colors

Color changes in flowers and plants create intriguing effects in the garden and home. Kids enjoy experiments using carnations which take food coloring up their stems into the flowers. Certain plants present color changes as they age or as a flower matures. Only one plant may be manipulated to alter blossom color whenever it’s growing.


Big-leaf hydrangeas (Hydrangea macrophylla) stand alone in their own ability to modify bloom color in response to soil conditions. They prosper in U.S. Department of Agriculture plant hardiness zones 6 through 9. In acidic soil, which has a pH below 5.5, these plants produce blue flowers. In soils with neutral or alkaline pH of 6.5 and bigger, the flowers come out pink because the greater pH makes aluminum from the dirt unavailable to the plant. Soil pH in between those numbers may cause the plant to produce lavender flowers, or even pink and blue blooms on precisely the same plant. The particular cultivar of big leaf hydrangea also affects bloom color.

Flowers Color Changes

Unique flowers change color obviously. The “Fifth Dimension” cultivar of the tropical hibiscus (Hibiscus rosa-sinensis) varies from a deep orange grass to a mild yellow flower from the time the grass opens in the morning to when it reaches full bloom in the night. Hibiscus plants grow well in USDA zones 9 and 10. Color changes during a blossom’s life are a sign to pollinators that the flower has aged past the pollination stage, the University of Vermont Extension notes.

Plant Color Changes

Several all-natural effects cause leaf to change color. Among the best-known shade changes is that the dynamic flaming shift of fall leaves. The bright colors which erupt from maples and other deciduous trees are caused by “anthocyanin” pigments. The trident maple (Acer buergerianum) rises in USDA zones 5 through 10. It’s an illustration of a tree with leaves that change color naturally in the fall.

Genetic Modification

Geneticists alter the pH in plant cells to make flowers in new colors. A plant’s genes determine blossom colour exactly the identical way that individual genes control eye shade. By creating a plant cells more acidic or more alkaline, then it is possible to alter the plant’s pigments. Red colors come from flavonoids, yellows and oranges from carotenoids and green from chlorophyll. Changing the levels of these pigments in various combinations creates new colors exactly the same way that combining paints together results in various colors. Scientists even utilize genes from one plant to make color changes in a plant from another species.

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