11 votes
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Bird-friendly weedkiller for patio?

Your best bet is probably to pour boiling water on the weeds. The heat will kill the plants, and the water will of course be harmless to the birds as soon as it cools. Just be careful not to burn ...
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  • 9,414
10 votes
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What kind of grass is this, and how can I keep it out of my garden

With those long underground rhizomes (the thick white runners you see) and upright growth this appears to be quackgrass (Elymus repens). Unfortunately, controlling it isn't much easier with that bit ...
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  • 5,839
9 votes

How long before poisons like Round-up become inert?

Glyphosate breaks down in normal soil within a few days, or even quicker. It can be rapidly bound to soil particles and be inactivated, unbound glyphosate can be degraded by bacteria. So if your ...
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9 votes
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How do I fix an area of grass that was ruined using a vinegar/salt treatment of dandelions?

Vinegar acts as a desiccant. It dissolves the protective coating on the leaves of the plant causing it to dry out and die if the temperatures are warm enough. It usually doesn't destroy the roots and ...
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9 votes
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What is the safest weed killer to use around a toddler?

Your strawberry and veggie patches are almost done for the year where you live, so it seems to me it would be best to tackle them next spring. For now, I would cut down the weeds as close to the ...
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  • 9,414
9 votes
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Do I have poison ivy, poison oak, or some other noxious weed?

I'm in the UK, and we don't have poison ivy, oak nor sumach, so I've never actually seen them. However, the small leaved plant covering the ground in between the Hosta leaves and the one with palmate ...
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  • 128k
8 votes

To be effective, how long does Glyphosate weed killer need to be applied before it rains?

From pioneer.com: "Foliar absorption of herbicides occurs in a liquid phase only; once a water droplet has dried on the leaf surface and herbicides have crystallized little to no additional ...
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  • 181
8 votes

How to get rid of bindweed (Convolvulus arvensis) once and for all?

Some years ago I apparently eradicated bindweed from a small (15 x 7 feet) unenclosed front garden adjacent to the parking lot. I lived on an Estate where a number of small, bored children were always ...
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  • 81
8 votes

Any suggestions on how to control clover and grass in a flowerbed?

Composting Pros: germicide. Cons: it take times, some clover seeds can germinate after composting and it is not suitable for large gardens. Herbicides (Postemergent) Pros: As per @J. Musser 's ...
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  • 1,175
8 votes
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What should I do about bare patches in my lawn after killing off Creeping Charlie?

You must not use Scotts Weed and Feed formulation now for two reasons - one, you've already applied a weedkiller to the entire lawn, and one of the active ingredients, 2,4D, is present in both ...
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  • 128k
8 votes
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Variegated Arboricola shrubs leaves wilting

The active ingredient of the herbicide used is Dicamba Mecoprop. It also affects broad leaf shrubs and trees. From this pdf by the International Society of Arborists Once the material is absorbed ...
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  • 56k
8 votes

Community treatment of wild parsnip - your recommendations

Since wild parsnip is a biennial, when I owned a couple of acres I would just wait for it to set seed, then snip the seedheads off into a five-gallon pail and burn them. I did the same for Queen Anne'...
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  • 13.5k
7 votes

How can I control/remove unwanted grass in flower beds?

Edge your lawn by digging a trench. The edges should be defined as perfectly straight or if you are doing curves, keep the radius consistent until you change directions. If you use a string and stake, ...
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  • 39.8k
7 votes

Can weeds be put into compost, or will they grow again when the compost is used?

Since some perennial weeds can regenerate from even tiny root fragments, they are not considered safe for composting unless you use the Berkeley method of hot composting, and measure the temperature ...
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  • 22.9k
7 votes
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What are the benefits of dethatching your lawn?

Thatch is an accumulation of dead organic debris that has not yet been decomposed that builds up between the soil and live grasses. St. Augustine is known for thatch buildup. This buildup blocks ...
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  • 39.8k
7 votes

What is this weed and how can I eliminate it?

If the methods described above aren't any you want to do, there is something else to try, but again, it's not a quick, easy solution - it requires determination and persistence. This plant here in the ...
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  • 128k
7 votes

How do I kill this salt cedar?

Firstly, you will probably want to cut the plant off at stump level again. I don't think burning stumps is very effective, or practical. I usually remove the crown, and kill the roots, but there are ...
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  • 51.5k
7 votes
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What are the uptake and decay rates for Spectracide® Weed Stop® for Lawns?

2,4-D: 10 days, up to 333 in wet areas. 2,4-D degrades fairly quickly in soils (half-life about 10 days for acid, salt and ester forms), with microbial degradation considered to be the major route ...
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  • 51.5k
7 votes

Get rid of weeds from my raised garden bed - without pesticides

Mulch is commonly used to control weeds, as it sounds like you've discovered on your own. Since you have a bad infestation you could use cardboard (or layered newspaper) with wood chips on top to ...
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  • 1,152
7 votes

What are these weeds & how can I prevent them?

The first photo is pokeweed, Phytolacca americana, a perennial plant native to North America. I would not recommend you eat this plant unless you know exactly how to prepare it to remove it's toxins. ...
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  • 1,135
7 votes
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What is solarization?

Soil solarisation is the process of using a green house effect with plastic to kill some pathogens and weeds in the first 6 inches layer of soil. It also helps break down organic materials on the ...
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  • 22.9k
7 votes

How long do I need to stay off the lawn after applying weed killer?

Read the label of the product you are using. The label will state a re-entry interval. Without the label we don't know what is in the specific spray you are using, so we can't give a proper answer.
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  • 5,839
7 votes
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Can I add paint to roundup, to see where I've been?

Don't use paint! Any paint has binders and adhesives, so it will tend to clog your sprayer, and (as you note) you can't be sure what the interaction of the various ingredients will be with the active ...
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  • 355
7 votes
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What is this weed and how do I kill it without killing the grass?

It does look like wild violets, and they are difficult to eradicate, but triclopyr, or any other lawn weedkiller that purports to kill these, is much more effective used in autumn, see here https://...
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  • 128k
7 votes
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What are these weeds and how can I get rid of them?

You have hairy bittercress (Cardamine hirsuta) in your garden. This plant very often comes as "hitchhiker" with newly bought plants. It is a very prolific seeder and can bring even two generations ...
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  • 15.5k
7 votes

Advise from experienced farmers

Yes, but you must be smarter than a doctor or engineer: some of the richest are php engineers. It is mainly economy: if there are many people that could do something, they will fight to produce it ...
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7 votes
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How do I eliminate weeds in established play area?

15x30 feet with the sort of weed density you are showing? - Take an hour and pull them out by hand, or with a hoe. If you notice a lot of root penetration below or between the under-fabric you might ...
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  • 18k
6 votes

Can weeds be put into compost, or will they grow again when the compost is used?

My suggestion would be to check it the weed is flowering. If it has any flowers remove them before throwing it in your compost bin. If done right, your compost bin will reach high enough ...
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  • 8,217
6 votes

What is this vine-like weed and how do I kill it?

Don't kill it, just learn to live with it and look how beautiful it is. If ever it takes too much space, reduce it mechanically by hand. Remember that plants are very strong and that products which ...
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