2011 There is new Weed killer which is legal for Ontario. http://www.ecosense.ca/en/Products.aspx?SelectedItem=Wswc Scotts® EcoSense™ Weed B Gon® Selective Weed Control Another way I tested for two years and worked great is using Round up, It is still legal in Ontario. http://www.scotts.com/smg/templates/index.jsp?pageUrl=roundupLanding&campaign=rdrudotcom But you don't Spray it. You would buy a small paint brush, and dip it in Round up and brush it on the leaf of the weed. Only one or two leafs need to be brushed. It would kill weed in three days. The most important thing for weed control is mowing the lawn often. Don't let weed go flowers, especially go seeds. Mow them before that. Weeds don't take mowing very well, you would get rid off majority of weeds by mowing alone. 2008年春 Spring is here. I found few friends are looking for this post. I am glad if it is usefully. I found home depot is selling scotts patchmaster. It is about 20 dollar per bag. I saw similar thing used by professional to start a new lawn. It is mixed with mulch to hold water for seeds. The success rate should be higher than grass seeds alone. I would try it this year. I would report to you if it is good. 2007 年 养草地本来不是中国人的传统, 但入乡随俗还是学一下的好. 难看的草地不但会减低你自己房子的价值,还会降低整个社区的房价. City bylaw也不允许,你的邻居可以到city告发你.强制你管起来. 杂草太多重铺一遍弄不好要上千. 其实养一块过的去的草地很容易,不必很多精力和金钱. 我说点偷懒的经验给大家听. 只当抛砖引玉. 要买的东西 “scotts sun and shade mix grass seed” 一包 $15 “Scotts wintercare fertilizer “ 一包 $15 “Killex Liquid Herbicide 2L “ $13 草皮(sod) 一卷 $3 以上东西Canadian tire , Home depot, Walmart 都有. 要做的事 1) 每年5月15左右注意天气预报.要是有连几天下雨,就赶在下雨前把1/3包的肥料撒出去. 要是有书本大的死草就翻了拿草皮补上. 有些树荫下总长不好的地方撒一把草子. 然后等老天替你浇水. 2) 割草按高度. 用mulch no bagging . 把手插到草里,要是草到掌根就开割,割完草到手指高. 7月8月不割草. 3)除去撒了草籽, 老天不帮忙要浇水外.靠天吃饭不浇水. 特别是7 8 月你要么天天浇.要么不浇让草发黄休眠. 4)9月1日再撒1/3 包肥料出去,然后再等下雨天. 在十一之前找草稀的地方把草籽撒上. 5) 10月15 把剩下的肥料全撒出去. 一年事就差不多完了. 6) 每周拿上Killex上yard走一下.特别是5月和9月. 见杂草就对着喷一下.一星期会死. Winter fertilizer 和Summer fertilizer 相比钾肥的含量高些.可提高耐寒耐旱能力全年可用. 买一包就够了. 分开买两包都用不完.