When is really the optimum time to treat broadleaf weeds in a lawn?

Question

have heard that you can treat them in early spring , late spring, and up till middle summer when the sap is growing inside of them, after the heat of middle summer and late summer/early fall, the sap begins to go down due to the heat and dryness of the weather.

anyone can correct me on this and when , how many time is really the best time to do this?

how far apart should you do the treatments also?

and would this time in late July be okay to treat them or not?

why and how so?

btw, I am in zone 6.

Thanks for your answers!

Answer 1

April to sept

first feed the lawn to make the weeds grow big so that more poison can be absorped through the leaves

after 3 days apply liquid weedkiller

do not cut grass for min 3 days

The conditions should be plenty of rain before hand and then dry and warm

do not use granular feeds and killers and use verdone 2 weedkiller

Right NOW is perfect weather

Answer 2

in early spring. go to www.scotts.com they have tips for all landscaping needs.

Answer 3

The best time for treating broadleaf this time of year would be a couple of days after mowing, on a humid, calm morning with the lawn damp from either dew, rain, or watered.

Spray with a 2-4-d product like ortho weed b gone, you will be able to respray about every 10 days.

Answer 4

treat whilst in growing mode ,spring onwards, use a good weedkiller and they wont trouble you again in the same year, but be aware if the weeds are in a lawn, such as dandelions, to permanently kill these sprinle approx  half teaspoon in the crown/centre of the plant & this will totally disolve the root system 100per/cent dead. and will NOT affect the grass/lawn.  a propriety lawn weed&feed applied about 3 times thru the summer will also help.

Answer 5

The best time to apply pre-emergents (the stuff that interferes with seeds germinating and growing into plants) is early spring.  When the weather breaks, and we have three days straight with temps in the high 50's is when a lot of the weed seeds germinate, so that's a good time for the pre-emergents.

The "Broadleaf weed control" products need to be absorbed through the leaves of the weeds to be effective.  When these weeds are actively growing is a good time.

If it's hot and dry, they aren't doing much growing, so they aren't going to be pulling the herbicides in as efficiently, and it's not going to work as well.

Answer 6

Treat as you say - when they are growing, pointless when they are fully grown or have seeded..

Hopefully you are using a contact weedkiller using Glyphosate?  If you haven't seen them start to die within a few days reapply the treatment.

I have found that if you already have heavy growth by the time you get to treating them it is worth ripping out as much as you can to promote new growth - then zap that as soon as you see it coming through - you are guaranteed it is in full growth then!

Answer 7

The best time to treat any weed problems...be-it an infestation or just the odd little h**r that appears when you least want it, is before it comes into flower/goes to seed. Use a glyphosphate/systemic weedkiller....goes in through the leaves and down to the roots.

In lawns, weeds rarely get a chance to get to flowering, let alone seeding because they are usually mown frequently. The best way is with a 'spot' applicator..(like a hollow walking stick, filled with chemical) that has a small spring-loaded nozzle on the end of it. See the weed....stab it....and bingo!!!

Depending on time of year, weather, type of  

weed,concentrate that you use (and your ability to even hit it and not the nice green grass around it) expect up to a week to see the reaction.