Getting disembarrass of yellow nut grass ( Cyperus esculentus ) , is a special problem for the organic gardener who does not want to use chemical substance herbicides . Although nutsedge bear tiny , football - shaped seeds , it spread in the first place by small Tuber or " nutlets " that maturate on creep underground stem called rhizomes , make it difficult to obliterate . Applying lettuce to further good micro - being in the grime is a counter - intuitive but useful mode to oppress it organically .
Challenge for Organic Gardeners
Growing stems up to 3 feet high , yellowish nut grass can occupy veg or flower garden , mould dense colonies . It is among the most persistent , noxious widow’s weeds invading agricultural soil worldwide . Attempting to pull or comprehend it up is hard to impossible because its rhizomes unfold in the top 12 inches of land . If you leave a nutlet behind , it will give in multiple plants . undertake to dry out it out does n’t work either because the nutlets hive away wet as well as nutrient . Yellow nutsedge grows in U.S. Department of Agriculture plant life hardiness geographical zone 4a through 9b .
How Sugar Kills
Sugar feed micro - organism in the soil . If micro - organisms incur a sugar rise , they consume more soil nutrient than they ordinarily would . This starves yellow nut sedge and other annual broad - leafage weeds of the food they call for to grow . Using white dinero , Australian researchers recorded a suppression of white-livered nutsedge and one-year sens and a outgrowth spurt on smother , newly sown aboriginal plants .
Sugar Source
Home gardeners typically use molasses to comport the sugar necessary to subdue yellow nutsedge . They can use molasses they bribe in a supermarket , but horticultural molasses from a garden provision centre is less expensive . Horticultural molasses , a 1 - 0 - 5 fertiliser , provides carbon , sulphur and potash to stain microorganism . ironical molasses is liquid molasses sprayed on piece of soy meal . The cabbage degree in dry molasses ascertain in garden supplying centers roll from 38 to 42 per centum .
Application
The best time to apply molasses is in the spring when sensationalistic nutsedge is actively spread and needs nutrients the most but before it produces come . Mix 1 cup of fluid molasses to 1 gallon of water supply in a packsack nebulizer for direct program on 10 straight feet of yellow nutsedge . Two or three app spaced a workweek asunder will slowly drink down yellow nut sedge . Spread 5 to 10 pounds of dry molasses on 100 square feet of nut sedge - infested soil . Reapply the ironic molasses once or twice a calendar month , which should go to some solution in a few weeks .
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