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W.A. Skroch
The colorful
flower bed is often the focal point of the landscape requiring high
labor input for weed control. Minimal design changes (i.e. grouping
plant species) can be incorporated which reduce maintenance dramatically.
Weeds can be controlled by hand pulling, hoeing, or herbicides.
When a large variety of flowers, or relatively uncommon flowers
are used, weed management with herbicides can be limited. This details
the herbicides that are most widely available for managing weeds
in existing flower beds.
Some herbicides
can be used for weed control in existing flower beds. The following
table lists some of the most widely adapted herbicides used on established
flowers for weed control. Selecting flowers for the bed based on
available herbicides can reduce maintenance costs.
| Herbicide |
Use
Labeled on these plants
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PREEMERGENCE
(Before weed germination)
DCPA Ageratum,
alyssum, aster, bellflower, (Dacthal and bleedingheart, bugloss,
candytuft chrysanthemum, many other cinquefoil, coleus, columbine,
coreopsis, cosmos, products) dahlia, delphinium, evening primrose,
forget-me- not, foxglove, geranium, gladiolus, golddust, hydrangea,
iris, lantana, larkspur, lily, lupine, marigold, morningglory, nasturtium,
peony, petunia, poker plant, sage, snapdragon, stonecrop, strawflower,
sunflower, sweet pea, violet, yarrow, zinnia.
Trifluralin
Yarrow,ageratum, alyssum, arctotis, aster,balsam, (Treflan, calendula,
California poppy, calliopsis, plus other carnation, centaurea, chrysanthemum,
cosmos, products) dahlia, dianthus, dimortheca, forget-me-not, four
o'clock, gaillardia, gladiolus, lobelia, lupine, marigold, morningglory,
nasturtium, nicotiana, periwinkle, petunia, phlox, portulaca, rudbeckia,
salvia, scabiosa, shasta daisy, snapdragon, stock, snow on the mountain,
sunflower, sweet pea, sweet William, zinnia.
POSTEMERGENCE
(After the grassy weeds are growing)
Fluaziflop
2000 Bellflower, candytuft, coleus, common yarrow, (Fusilade, crown
vetch, daylily, dusty miller, ivy, gardenia Ornamec, (dwarf) gay
feather, geranium, gladiolus, gold Grass-B-Gon) drop, hen-and-chickens,
hollyhock, liriope, marigold, ornamental strawberry, periwinkle,
portulaca, potentilla, primrose beauty, red fountain grass, rose,
salvia, santolina, sedum, shasta daisy, snapdragon, statice, sweet
William, variegated hos.
Sethoxydim
Begonia chrysanthemum, coleus, geranium (Poast) gladiolus, impatiens,
iris, maiden pink, marigold, periwinkle, petunia, snapdragon, sweet
William, zinnia.
With the above
listed products, grasses can be readily controlled and some annual
broadleaves can selectively be controlled in flowers. Check current
specialty product label for timing of applications on each product.
Several other herbicides are available for use on a limited number
of flowers. In addition, glyphosate containing products are readily
available for use around landscape situations.
*Use of trade
names does not imply endorsement
Notice: The
information contained on this web page is derived from industry
sources which are considered reliable. Information is subject to
change and withdrawal without notice; therefore, it is the responsibility
of the consumer to verify reliability on an individual basis based
on specific consumer needs. We assume no responsibility, and extend
no guarantees for information provided. Trademarked names are used
in an editorial context with no intent of trademark infringement.
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1995 - 1999 Barrington Multi Media., all rights reserved.
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