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Weed killer for lawns and garden without harsh chemicals
Weed killer for lawn use (and garden) works best when the formula matches the weed. Sunday's iron-based options, like Dandelion Doom, target broadleaf weeds and moss without harming grass, while Weed Warrior handles grassy weeds, gardens, and hardscape. Both work from spring through fall, so homeowners can spot-treat problem areas without reaching for harsh chemicals.
How to apply weed killer for lawn the right way
- Identify your weed before choosing a weed killer for lawn
- Pick the right formula for broadleaf weeds, grassy weeds, or both
- Shake well and spray directly onto weed leaves until fully covered
- Reapply according to label for stubborn or deep-rooted weeds
- Overseed thinning or bare patches after weeds clear out
Looking for DIY lawn care plan with pre-emergent? We offer that now, too. Get your free lawn analysis now.
Pre-emergent vs post-emergent weed killer questions answered
Q: What's the best weed killer for lawns?
A: Dandelion Doom is the best weed killer for lawns if you have sporadic broadleaf weeds. It uses iron to kill weeds down to the root while keeping your grass totally safe. Have a really weedy lawn? Try Weed & Green Broadcast Weed Killer for lawns. Made with iron to green up grass, but kills weeds fast and easy.
Q: Is weed killer safe for kids and pets?
A: Sunday weed killers use iron-based and soap-based formulas instead of harsh chemicals. Just let the treated area dry completely before letting kids or pets back on the lawn.
Sunday Tip: To protect pollinators, remove flowering weed heads before spraying.
Q: What's the difference between pre-emergent and post-emergent weed killer?
A: Pre-emergent weed killer stops weeds before they sprout. Post-emergent kills weeds already growing. Weed and Green does both, making it a solid weed killer for lawn season-long control.
Q: How long after applying weed killer can I mow?
A: Let the weed killer dry completely before mowing. The longer weeds absorb the formula, the better it works, so give it a full day or two to dry before you fire up the mower.
Q: Will weed killer kill my grass too?
A: Dandelion Doom is a selective weed killer for lawns that targets broadleaf weeds using iron, leaving grass unharmed. Weed Warrior is non-selective and will kill desirable grass, so use it in garden beds, walkways and other hardscape.
Q: Will this weed killer harm my grass, or is it selective?
A: Depends which one you grab. Dandelion Doom is selective and won't harm your grass. Weed Warrior is non-selective, meaning it'll take out anything green it touches (including grass), so save those for hardscapes and garden beds.
Q: How long does it take for Sunday weed killer to work?
A: Fully drenched weeds can dry up in as little as 20 minutes, though larger or more mature plants may take up to 12-24 hours to show full results. For best results, apply between 50–85°F on a dry, sunny day.