Ugh...the Weeds
Weeds are simply plants growing where you do not want them. They are a never-ending eye sore that can quickly blanket your landscape. Staying on top of them can be time-consuming and sometimes seemingly impossible. It is always best to control them by pulling them, but some are difficult.
Here is a list of the most common weeds that we have in our gardens and how to deal with them.
I will be adding pictures as soon as I can.
Yellow Nutsedge A.K.A. Nut Grass
By Javier martin - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=34175078
Ugh, seriously, this one sucks. It isn't very hard to pull, but when you pull it the little nutlets break off and regrow a bunch more. You can very carefully dig it up successfully. Some people have used molasses and eliminated it over time (18+ months). Vinegar may damage it a little...sometimes. There are some synthetic herbicides that work well with consistent use. One of these is Ortho's Nutsedge Killer. There is an end in sight, I promise. This one takes some patience.
Fun fact...it is sometimes called Earth Almond or Chufa. The tuberous roots can be eaten raw or cooked and are sweet/nutty. If only the deer knew this!
Poa Annua (Annual Bluegrass)
By Sten Porse - Own photo, taken in Jutland., CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1201337
This is an annual weed that shows up in cool weather. You will see it in your yard when dormant and all over your flower beds just when you think gardening has shut down for winter. It is very easy to pull once it's big enough to grab. Pre-emergents are used to prevent the seeds from germinating, but the timing can be difficult. It can be sprayed with an organic or synthetic herbicide.
Dewberry
By Dendrofil - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=27877456
These vining berries are similar to raspberries and blackberries. You can eat them right off the vine, make wine with them (then call your favorite gardener), make jelly, or tea. These berries are plentiful and nutritious. They have some medicinal uses as well.
Sounds great right? Well, not so much when they're growing in an unwanted area.
These guys have nasty little thorns and are super hard to kill! If we lived in the country then I'd say accept their presence and make some jam! When growing in our manicured landscapes, we are forced to use some hardcore herbicides or dig and cross our fingers. If they are growing at the base of plants, then typically I suggest removing the plant and killing/removing the dewberry before replacing the plant.
Poison Ivy
By James St. John - Toxicodendron radicans (poison ivy) 2, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=83883652
We all know this guy and that we have to pull out the big guns (brush killer) for it. If you touch it, go wash up fast because the oil can bond with your skin within minutes. The oils can also transfer to other objects, so be careful.
Greenbrier
By Robert H. Mohlenbrock. USDA SCS. 1991. Southern wetland flora: Field office guide to plant species. South National Technical Center, Fort Worth. Courtesy of USDA NRCS Wetland Science Institute. - http://plants.usda.gov/java/profile?symbol=SMBO2, Public Domain, https://commons.wikimedia.org/w/index.php?curid=18189862
Glossy green leaves and thorns like roses. Brush killer or strong herbicide for this one, too.
Bermuda Grass
By Forest & Kim Starr, CC BY 3.0 us, https://commons.wikimedia.org/w/index.php?curid=71816727
Nothing is worse than getting Bermuda grass in you river rocked flower beds. This grass has roots so deep it will surprise you! That's what makes it so difficult to control. If it is in a flower bed that has weed barrier, I guarantee you it's growing out of control below the barrier, sometimes making a thick woven impossible mess. It can overtake plants, making it impossible to get rid of without removing the plant.
Bermuda usually takes a strong synthetic herbicide to control, possibly needing multiple applications.
Zoysia Grass - Same as Bermuda, just more green!
St Augustine Grass
By Forest & Kim Starr, CC BY 3.0 us, https://commons.wikimedia.org/w/index.php?curid=70613379
Fast growing, but easy to remove from beds since it sends runners on top of the ground.
Tree Seedlings
By LBM1948 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=91101818
By Pacific Southwest Region USFWS from Sacramento, US - Oak seedlings, Public Domain, https://commons.wikimedia.org/w/index.php?curid=68987838
Saved the worst for last. Trees drop their seeds in our flowerbeds and leave us with a carpet of green. They do not all survive the first year, but we have to stay on top of baby tree hunting all year. They can grow up in our plants unnoticed and get so bad that we have to remove the plant in order to remove the elm.
A pre-emergent can be used in some cases to prevent this, if timed correctly.
Synthetic herbicides may be used if the babies are under about 2 years old, sometimes with success. If you cut them repeatedly, you can bet on a big dig project in a few years.
The worst ones are Elms and Hackberries. Oaks, Chinese Pistache, and many others do this too.