Sunday, May 27, 2012

More weeds in the yard!

Since we have been in our place nearly a year it was time to tackle some of the larger tasks we have been putting off. Chainsaw in hand, a number of umbrella trees and African Tulip trees were in our sights. These two species are weeds here in south-east Queensland. They are quickly spread throughout the environment by our lovely native birds, which eat their seeds and fly elsewhere poop out the seed and voila a new tree sprouts! Basically, these species have the ability to out-compete our native tree species, through quick establishment, prolific seeders and lots of helpful native birds assisting their movement. 

We removed three semi-mature African tulip trees and about five umbrella trees from the bottom of one of our paddocks. All we did was chop them off at the base and pile the top half of these trees in a big pile (will chip later). We will then monitor these stumps for re-growth and if required undertake some additional treatment (maybe salt).

Here are some piccies of these two offending weeds. 

African Tulip Tree

Umbrella Tree

In addition, to chain-sawing the trees out, I choose to remove a small patch (about 5m x 1.5m) of broad-leaf paspalum. This is a shade-tolerant, non-native, hardy grass species, which out-competes many of our native grasses. I employed the assistance of a fork and just loosened the soil around the base of each individual outcrop and removed them to the domestic waste bin once out of the ground. I did this action about three weeks ago and so far no new outcrops of this grass have sprung up in the area of 'treatment'. 

 Broad-leaf Paspalum
Hope these treatment options hold and with my revegetation money I will look to establish a bit of a native cover crop/midstorey to replace these weed species and provide some additional protection for my overstorey eucalypts.

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