We continue to offer the pre-emergent Pendulum® Pre-M® herbicide to prevent weed seedling development in lawns and ornamental gardens. Pre-emergent herbicides are usually very specific products that interrupt root development. Since they are specific, they don't control ALL weed seeds. Nothing available for the residential landscape gives you the erroneously advertised ‘weed free garden’.
PREEMERGENT HERBICIDE PENDULUM® PRE-M® 0-0-8 with 1.5% pendimethalin EPA #1040-98 is available as broadcast granules that may be applied to all landscape beds and lawns when applied according to product supplied directions. A 50# bag treats about 8,000 ft.².
PENDULUM ®, controls 60-80% of the common weeds for 6-9 months.
Pre-M® may be stored for a number of years but must be kept dry as moisture helps break down the active ingredient. For further information on Pre-M®, Pendimethalin®, see the WWW at http://ace.ace.orst.edu/info/extoxnet/pips/pendimet.htm
PENDULUM® does not affect existing weeds or desirable trees, shrubs, perennials, bulbs. PENDULUM® aborts ONLY developing seedlings. ANNUAL March and August applications are recommended. PENDULUM® performs satisfactorily whenever applied, provided adequate triggering moisture is available. Weeding maintenance is reduced. Nutrients, which would have gone to weeds, are now available to the desirable plants. A listing of controlled weeds is available at our offices. Notice is provided upon treatment of the area. Please do not walk onto the treated area until the sprayed foliage is dry, approximately three hours following treatment. Call 1-(800) 858-PEST at The University of Oregon for further information
Pendulum® has been found to have deleterious affects on Phlox and Pulmonaria – Lungworts. It may be problematic on Anemonella thalictroides – False Rue Anemone. Even when these are accidentally sprayed, they do come back -- not all is lost. Cover all these plants before treating the area with newspaper or boxes or something similar. Dispose of covers when finished.
Cover all birdbaths and other aquatic features to prevent any chemical from becoming in contact with fish. A piece of plastic, a painter's drop cloth or large pieces of cardboard will be just fine. Right around the pond use a smaller sprayer like a trigger sprayer.
With mild temperatures or heavy snow cover Oxalis does not die but acts like a perennial. The way to get rid of it to pull it out and then treat it with Pendulum. Pendulum will prevent the reseeding of an area once it is cleaned out. I have noticed over-wintering in a number of locations.
Pre-M® is one of a few pre-emergents that controls Oxalis – Sorrell, that pesky clover-like plant with small bright yellow flowers.
See it at: http://aggie-horticulture.tamu.edu/plantanswers/turf/publications/weed6.html
For further information on Pre-M®, Pendimethalin®, see the WWW at
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