The weed in my backyard has been uncontrollable. We already pulled it out twice but they keep coming back. Any idea what type of weeds these are and how to prevent them from coming back? Preferably we want to grow something in the backward in the near future.


Comments

  1. It looks like the fuzzy thing in the lambsquarter may be a lunari going to seed. Yes, maybe the best strategy is to just let it all be…but frankly, a lot of the weeds are non-native so why not replace them with native varieties.

    Bessie, if you want color and flowers try growing some native goldenrod (which is called “solidago”!), rudbeckia or native asters. Also relatively tough: native pear cactus, creeping phlox, both fairly low growing. All of these are perennial so plant them in containers that are on the larger side and see if you can bubble-wrap the outside of the containers in winter. There are also lots of sedums (both creeping and taller) that might do well on a roof.

  2. What is that plant growing in the middle of the lambs quarters?

    I’ve had trouble cultivating non-weed plants on my roof deck (except for the seed pods I’ve taken from the botantic gardens or other successful local growth), so I’ve taken to gathering up interesting looking weeds and putting a bunch of them in one pot or rearranging them to make them look more planned and aesthetically pleasing.

    I think some of the stuff that blows over is from other people’s cultivated plants. This year I had some nice bushy things with light purple berries. They don’t need much water and made me feel mildly successfully in my horticultural efforts.

    Thanks for the mugwort definition, solidago. I’d always wondered what it looked like since allergy testing revealed I am highly sensitive to it.

    The thing between the mugwort and the lambs quarters looks like a relative of dandelion. The grassy stuff, some crab grass type plant?

    P.S. Lambsquarters is not a good looking plant if you just let it grow, but it will get to almost 3 feet tall.

  3. No one even addressed the fact that the vast bulk of the what is pictured in the photograph appears to be a type of crabgrass. There’s also a dandelion in there. The mugwort (I can’t stand the stuff) is fairly young looking. This photo looks like you took it some time ago, no? Although, maybe with the rain and relatively cool weather, the weeds haven’t progressed that much…but I doubt it. Please post a recent photo.

    But from what I can see, the crabgrass looks fairly young…and I’m sure if left there, it has now gone to seed. Ugh.

    Crabgrass is an annual grass. As with many of seeds, they can remain viable in the soil for years. In fact, digging can pull weed seeds closer to the surface where they are more liable to sprout. So, digging and redigging season after season can lead to new weed infestations even if no mature plants seem to set seed in the area.

    I heartily agree with putting down paper and mulch for a while. Otherwise, pull everthing and be vigilant over the next years.

    On thing you might avoid is digging too much. The best way to enrich the soil without causing weed reinfestations is to lay down a layer of compost (with luck weed seed free) each season and not deep dig it. Just layer a couple of inches on top of the existing soil and let it be. There are many soil critters that help pull the new material down into the lower soil.

    Also, use a type of mulch that breaks down quickly. The problem with wood chips is that decaying wood lowers the nitrogen level in soil. Try dry tree leaves on top of compost and see how it goes. The leaf mold that develops can be a great source of nutrients and a good home for beneficial soil organisms.

    Please don’t use chemicals.

    I’ve been pretty good at eradicating mugwort and lambsquarters by hand.