Weed Control
Best Brush Killer: The Method Decides the Formulation
Penn State: an oil-based triclopyr ester goes on any time after cutting; a water-based one must be applied immediately. Choose the method, then the bottle.
Topic collection
Total & Non-Selective Herbicides
What do I use where I want nothing growing at all — and why did it come back?
Gravel, driveway cracks, fence lines and a lawn you intend to replace are the jobs no selective product is for. The distinction that decides all of them is contact versus systemic: a burndown removes the leaves, a systemic kills the plant, and NC State notes none of the contact options have any residual activity in soil. These guides cover which is which, what 'Roundup' actually contains, and how soon you can seed afterwards.
8 guides in this collection ·All weed control
Product Reviews
Best Grass and Weed Killer: Three Jobs, Three Products
NC State: glyphosate reaches the roots and has little or no soil residual. Contact killers do neither. Decide which of the three jobs you actually have.
Weed Control
Glyphosate vs Glufosinate: The Roots Are the Difference
Glufosinate is faster and matches glyphosate on annuals and nutsedge. NC State: it does not translocate throughout the plant — so perennials come back.
Weed Control
How Long After Roundup Can I Plant Grass? Purdue Says Same Day
Glyphosate has no soil activity, so it will not harm seedlings even seeded the same day. The real risk is which bottle you bought — not all Roundup is glyphosate.
Lawn Care Guides
How to Kill a Lawn Before Reseeding — Or Not Kill It
Penn State decides this with two measurements, not a feeling: how much of the lawn is desirable grass, and how deep the thatch is. Under 50% is the kill-off line.
Weed Control
How to Kill Kudzu: The Big Root Is Not the Target
Alabama Extension: the large woody root cannot sprout. Kudzu regrows from root crowns at the soil surface — which is what you can actually reach and kill.
Weed Control
How to Kill Poison Ivy: The Rash Comes From Cutting It
UGA: the toxin is not normally on the outside surface of intact leaves and stems. So the dangerous act is breaking the plant — which is what pulling does.
Weed Control
Weeds in Gravel and Driveways: Why They Keep Coming Back
Every ready-to-use bottle for hardscape is a contact killer. NC State: they knock down top growth only, and none have residual activity in soil.
Related collections
Other weed control topics worth reading next.
Weed Identification
What weed is this, and which product family actually kills it?
Broadleaf Weeds
How do I kill weeds without killing my grass?
Grassy Weeds & Sedges
Why won't my weed killer touch this grass-like weed?
Pre-Emergent Timing
When exactly should I apply pre-emergent where I live?
Pasture & Acreage
I have more than a lawn — what changes when animals graze it?
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