Perennial weeds live for two or more years and will grow as long as conditions are favorable. They don’t set seed as fast as annual weeds, but their root systems are often extensive. Some perennial weeds spread by seed, while others spread from root pieces or from stems that root as they creep along the ground. If you allow perennial weeds enough time to grow, removing the entire root by hand-pulling may be impossible. Weeds such as dandelions (Taraxacum officinale), which are hardy to U.S. Department of Agriculture plant hardiness zones 3 through 9, can regrow from even a tiny fraction of root left in the soil. Perennial weeds can be killed, though, if you pull them while they’re young. Mature perennial weeds require repeated pulling to exhaust the root and eventually kill the plant.
Weeds are opportunistic and will infiltrate open spaces in your landscape where they find warmth, sunlight and moisture. By denying any one of these things, you can prevent their growth. Fill spaces empty spaces in your landscape with mulch or desirable vegetation to take away the space weeds need to grow. Organic mulches, such as chopped leaves, wood chips, compost or grass clippings, or inorganic mulches such as gravel, landscape fabric or black plastic, block sunlight and warmth to prevent weed growth in flower beds and around trees and shrubs.
Annual weeds such as crabgrass (Digitaria spp.) and common chickweed (Stellaria media) complete their life cycle in a single growing season. Some annual weeds can do this in a matter of weeks and produce several generations per year. To kill these weeds, you must pull them as soon as possible after germination so they don’t have the chance to set seed. Summer annual weeds like crabgrass germinate in the spring and continue to grow throughout the summer. Winter annual weeds like common chickweed germinate in late summer and early fall. They overwinter as green, dormant plants and produce seed in the spring or summer. These weeds usually die with the arrival of warm weather.
How and when you pull weeds influences how long it will take to kill them once and for all. Weeds are easiest to pull when the plants are small and the soil is moist. Young weeds have not yet established their root system, so it’s easier to pull the entire root. Annuals are often easy to remove the first time around, but any pieces of perennial weeds that are left behind may resprout. For this reason, it may be better to dig these roots out with a garden trowel or a dandelion digger so that you can see the entire root. Remove as much of the root system as you can find. It’s easy to miss tiny pieces, so you may have to repeat digging perennial roots several times before you eradicate the entire weed.
Hand-pulling can be an effective solution to remove weeds in the garden, but pulling out the root doesn’t always kill the entire weed. Different weeds require different control measures, and while one weed may be killed by pulling the root the first time, another isn’t quite as easily eradicated.
Renee Miller began writing professionally in 2008, contributing to websites and the "Community Press" newspaper. She is co-founder of On Fiction Writing, a website for writers. Miller holds a diploma in social services from Clarke College in Belleville, Ontario.
A plant grown from seed is capable of yielding more than a cloned offspring. Most plants grown from seed naturally produce a tap root, whereas plants grown from clones are unable to do so. Growing from seed also lessens your chances of inheriting any pests or diseases from a cutting.
What does it mean if a seed is feminized?
Breeders make feminized seeds by stressing a female plant into growing male sex features like pollen, and then using this pollen to fertilize another female. But feminized seeds got a bad reputation due to early efforts with plants that had high hermaphroditic tendencies.
What’s better clones or seeds?
1 : any of a genus (Rubus) of usually prickly shrubs of the rose family including the raspberries and blackberries also : the fruit of a bramble. 2 : a rough prickly shrub or vine. Other Words from bramble Example Sentences Learn More About bramble.
While most annual weeds are easy to keep under control by hoeing and mulching, perennials tend to be strong and fast-growing, so a little more effort is required to eradicate them. Perennial weeds include wildflowers such as spear thistle, red valerian and celandines, and more ornamental plants like golden rod, curled tansy and some species of grass. You can’t always predict what’s going to be a problem, as some weeds thrive in a particular soil type or situation.
Published: Friday, 12 April, 2019 at 8:01 am
Lesser celandine, oxalis, ransomes and Spanish bluebells are propagated by small bulbils and spread quickly. Regularly hoe off the leaves before the plants flower, or cover soil from March to June with black polythene to suppress growth.