Could be a slow
It could take years to eradicate them this way, but it
can work. They may have come
back with a vengeance because you left lots of small bulbs behind,
or pieces of bulbs, when you pulled them out by hand. It is more
effective to dig them out with a trowel to make sure you get the
You can compost the
leaves, but send the bulbs out with the trash or burn them. Most of us do not
compost intensively enough to heat the piles up sufficiently to kill
most weed seeds and vegetative structures.
grassy appearance, onion and garlic can be controlled with
herbicides labeled to control broadleaf weeds such as dandelions.
But they are a challenge because the waxy coating on their leaves
causes herbicide applications to run off instead of being absorbed.
formulations will be much more effective than granular weed-and-feed
products. Be sure to wet the
foliage thoroughly when you are spraying, and be aware that you will
need to make repeated applications.
ingredients of standard broadleaf weed control products include 2,
4-D; 2, 4-DP (dichlorprop); MCPP (mecoprop); and dicamba. Most
herbicides available to home gardeners are amine salt formulations,
which are less likely than ester-based ones to volatilize and drift
off target, especially during hot weather. However, ester
formulations are more volatile, which makes them better able to
penetrate the waxy cuticle of leaves.
They are not
restricted-use products that require an applicator's license to
purchase them, but they are professional-use products that usually
come in 1-gallon and larger sizes -- more than homeowners should
ever need or use. You may sometimes
find ester-formulation herbicides in quart sizes at farm supply
stores such as Agway. Call before you make a special trip.
perennial weeds are best controlled by late summer-early fall
herbicide applications, mid-spring is recommended to control wild
onions and garlic.
recommendation is that you should mow prior to spraying the
herbicide. The cut surfaces will absorb the herbicide better than an
Gardens - Mulches and Weeds