can you apply grub killer and weed killer at same time - Hewitt's Garden Centers (2024)

FAQs

Can you apply grub killer and weed killer at same time - Hewitt's Garden Centers? ›

No, not a good idea since the grub control needs to be watered in with 1″ of water and weed killer need to sit on the leaves of the weeds for at least 24 to 48 hours to work before it gets washed off. Id apply the grub control first then do the heavy watering.

Applying the products separately maximizes their effectiveness. Fewer safety risks: Chemical products are less predictable when blended together. Mixing the products could put your safety or the environment at a higher risk of adverse effects.

Applying grub control in late spring or early summer, typically between April and June, will help to disrupt the lifecycle. This is when grubs are in their earliest developmental stages, and the treatment will be most effective.

Most types of grass can tolerate a combination of fertilizer and weed killer. However, some grasses are more tolerant than others.

If you choose a lawn fertilizer product that is fertilizer only (no insecticide, no herbicide) you can apply both the fertilizer and the Bioadvanced Grub Killer Plus and water them in together. If you choose a fertilizer that includes another treatment, then it would be best to wait two weeks between applications.

Id apply the grub control first then do the heavy watering. While the lawn is still wet from that watering, apply the weed killer. This will help the granules stick to the leaves.

While too much water nullifies their effectiveness, most residual herbicides need some soil moisture in order to work properly. The herbicides are activated by moisture within the soil and are then absorbed by weed seedlings. Weed growth stops or is stunted, leading to plant death shortly after it emerges.

Pesticides for Grub Control

Such pesticides often must be watered in after application; apply at least half an inch of water. Typically this means running a lawn sprinkler for as much as an hour. Use several straight-sided containers to measure and monitor sprinkler output to avoid creating pesticide runoff.

Therefore we recommend applying GrubEx1 from May through the end of June. If you apply it too early in the spring, the active ingredient will break down before prime grub hatching time. If you apply it when the grubs are too mature, the insecticide is not very effective.

The maximum number of Grubex applications is one per year. Jonathan Green Grub & Insect Control can be applied up to 3 times per year. Apply your grub control to a dry lawn with a rotary spreader. Make sure to follow the spreader settings provided on the product's packaging.

Should you weed or fertilize first? ›

However, remember to wait for at least a week after weed control before fertilizing. It allows your soil to absorb any weed control products you've applied. The best time to fertilize your lawn is when it's not under any stress.

Ideally, you should fertilize your lawn with the right Scotts® Turf Builder® lawn food for your grass type 4 times a year: in early spring, late spring, summer, and fall. Feedings should be spaced 6 to 8 weeks apart.

If Scotts Turf Builder Weed and Feed 3 is applied before seed you will need to wait at least one month to seed, sod, or plant grass sprigs.

If you're still wondering what the best time to treat grubs with a preventer or a killer is– this is sometime during the early spring and late summer, when there's visible increased grub activity on the lawn. Grub preventers must be applied ideally sometime between June and July, just before the pests hatch.

If you have areas of dead turf, you'll need to re-seed them. Some areas will need to be scraped clean, soil added, and seeded. However, some areas may just warrant slice-seeding to repair them. Either way, they aren't coming back on their own.

GrubEx is not effective on mature grubs. This product must be immediately watered into the soil before it will be affective and must be applied to the entire lawn for complete control.

Like any strong chemical, insecticides can harm your lawn and other plants if not used correctly. Using too much by accident or choosing the wrong type for your situation could do more harm than good.

If you apply pest control mixtures in the yard, you should have two sprayers. One sprayer should be marked for applying only herbicides, chemicals that control weeds. The other sprayer should be labeled for use only when spraying insecticides, fungicides and foliar fertilizer.

“If they broadcast spray their lawn with too much herbicide, it will generally just turn it brown really quickly,” Beardall says. “It can be confused with insect damage, but the pattern of the dead grass is what will typically set it apart from insect damage.”

So Coles suggests a general guideline would be to spray wheat in the early morning, canola in the middle of the day, and peas at night. Generally, broadleaf weeds tended to be more sensitive to the time-of-day effect than grassy weeds.