AMERICAN GARDENER

Plants with green and purple leaves get that combination from anthocyanin pigments layered over or alongside chlorophyll rather than replacing it entirely, which is exactly why so many of these plants show genuine green tissue somewhere on the leaf, whether as an undertone beneath a purple surface, a network of veins, or a separate zone … Read more

Controlling weeds in centipede grass lawns requires a genuinely different approach than managing weeds in most other turfgrass, since centipede is unusually sensitive to several of the herbicides and cultural practices that work perfectly well on bermudagrass, zoysia, or cool-season lawns. According to University of Tennessee Extension’s turfgrass weed science program, centipedegrass is intolerant of … Read more

Plants with green leaves and red veins get that contrast from anthocyanin pigments concentrated specifically along the vascular tissue running through each leaf, rather than spread evenly across the whole leaf surface the way solid red or purple foliage typically develops. That concentration along the veins isn’t just decorative, since the vascular bundles are also … Read more

Plants with green and pink leaves get their coloring from a genuinely different pigment system than white or yellow variegated plants, since the pink and red tones typically come from anthocyanins, the same class of pigments responsible for red autumn leaves and purple fruit skins, layered over or alongside the usual green chlorophyll. Because these … Read more

Plants with yellow and green leaves get their two-tone foliage through several distinct routes, from stable genetic mutations that suppress chlorophyll in specific leaf zones to naturally occurring golden-leaved forms selected and propagated because gardeners simply liked the color. Unlike the crisp white variegation seen on some cultivated plants, yellow and gold variegation often carries … Read more

Plants with white variegation get their striking two-tone or patterned leaves from a genuinely interesting biological quirk rather than any deliberate dye or treatment. According to the University of Illinois Extension, variegated leaves are frequently the result of a chimera, a plant made up of 2 or more genetically distinct cell layers, where the white … Read more

Plants with red seed pods rely on that vivid color for the same basic reason so many red fruits exist in nature: birds and other animals see red exceptionally well, and a bright red seed advertises itself as a reward worth eating and carrying elsewhere. That strategy backfires spectacularly in a genuine minority of cases, … Read more

Controlling weeds in your garden or lawn works best as a combination of strategies rather than relying on any single method, since most weeds have evolved several different ways to survive a single tactic. A weed with a deep taproot shrugs off shallow tilling, a weed with a massive seed bank shrugs off a single … Read more

Creepy trees that appear to devour objects, structures, and even other trees aren’t performing any kind of deliberate predation, but the visual effect can be genuinely unsettling once you understand the biology behind it. A tree trunk grows almost entirely in diameter through a thin layer of cells called the cambium, and anything left in … Read more