Here are this week’s gardening questions and answers, provided by Parker County Master Gardeners. To submit a question, send it to firstname.lastname@example.org. For more information about Parker County Master Gardeners, or to become a member, call 817-598-6096 or visit www.pcmg-texas.org.
I have ragweed growing in my flower bed. How do I remove it?
Common ragweed is a summer annual weed. It thrives in poor soil that lays undisturbed. It can grow 3-6 feet tall and has spikes of non-showy, greenish-yellow blooms in late summer and early fall.
A plant that is left to go to seed can produce more than 30,000 seeds, so your goal is to remove that plant before it flowers. Over the past several years, ragweed has developed a resistance to herbicides, which make it difficult to control. As a result, the best method is to identify the weed while it is 3-4 inches tall, remove it and dispose of it in the compost pile or trash.
I have a sick tree that is infested with green iridescent beetles. How do I get rid of them?
There are several varieties of green iridescent beetles; but they do very little, if any, harm to trees. Bring in a sample of the tree and we will identify it and determine what is wrong.
Did you know?
Hummingbirds are migrating to their winter grounds now (September-October) so feeders need to be out for them. Feeders should be cleaned every two or three days and refilled with fresh nectar as needed. The formula for the feeders is one part granulated sugar to four parts water; boil formula then let it cool. Do not add red color to the water because most feeders have red on them. Also, add nectar-rich, fall-blooming flowers to your garden such as flame acanthus, Turk’s cap, lantana, autumn sage, zinnia, honeysuckle (Mexican, coral, and cape).