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The herbicide 2,4-D mimics the plant hormone auxin and sets off a complex series of events - involving two other plant hormones - that eventually lead to the death of susceptible plants.
Grasses are much less sensitive to synthetic auxin herbicides than are dicots. That is, a much higher threshold level of auxin-based herbicide is required to elicit physiological responses in grasses versus the so-called "broadleaf" plants. So, at the doses used to kill daisies, for example, grasses are largely unaffected.
What else can I help you with?
Where can daisies be found in the US?
you offon find daisys in the grass, fileds or woods
Are there any non woody plants?
yes like daisies and grass and pansies.
How is a daisy growing in mowed or grazed grass suited to it's habitat?
Daisies in mowed or grazed grass can benefit from increased sunlight reaching the ground due to the shorter grass. This allows them to photosynthesize more efficiently. Additionally, the disturbance from mowing or grazing can help prevent taller, competitive plants from shading out the daisies.
Can insecticide kills frog?
They eat grass
What herbicide kills Saint Augustine grass but not marathon grass?
too many big words!
How does motor oil effect grass?
it kills the parts it touches
Why is Grass weak to Poison?
Because poison kills plants
What plants live in the same area as owls?
Lots of trees and flowers like daisies,sunflowers and more
Does using salt on the grass in the winter kill the grass?
Yes, salt kills the grass in most yards. There are some salt-tolerant grasses but they are not common.
What greenish yellow gas kills grass and trees?
Chlorine gas
Why is there a patch of dead grass where a dog goes to the bathroom there?
Because the acidity from the dog's urine kills the patch of grass they urinated in.
Can skunk spray kill grass?
Only aerasol bug spray kills grass, the same goes for aerasol sunscreen
