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Sep 14, 2016 6:44 AM CST
Name: bron
NSW-Qld border Australia
18 yr old in my subtropical garden!
Barbalee said:Mulch didn't get 'em, so Preen or Treflan will be first thing next spring. The weeds are actually crabgrass, so what I miss will die very soon, but it's prepared to come back next year... we shall see about that! I'm crabbier than you are, crabgrass!


Mulch doesn't kill many weeds unless it is more than 4" thick. But it does make it much easier to remove them. Do nit let the weeds go to seed.

But if you put cardboard down between your plantings so you only have to pull weeds close to the daylily, it suppresses weeds. With a light mulch or leaves on top the cardboard isn't noticeable. But the cardboard usually needs to be a double layer. eg. get a box from a store that packaged products for their shelves. Undo and flatten it but don't open it out making it a single layer. Also walking on it when wet, or covering with grass clippings, heavy mulch or branches will soon rot holes into the cardboard and allow light to the weed seeds. Also it must overlap enough so light to the ground is excluded. The cardboard breaks down after 2 yrs and improves the soil.

It is also makes it easier to pull out weeds from near the edge of the cardboard. But best is when you can allow weeds to grow green and almost mature then cover with cardboard. If you can do this when the leaves are actively growing it turns them into nice green manure. But killing grass that is dormant in winter takes a long time in great contrast with summer when they want to grow grow grow.

Termites don't eat it like they do layers of newspaper. unless there is a log or layers of paper nearby in which case they may be under it to keep cool and moist. Here we must watch out for snakes if lifting it. Also cane toads keep moist under it.

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