Spreading The Word On African Love Grass

Who knew that watching the grass grow and grow was so interesting?

I’ve written a thousand blog posts in my mind over the last couple of months. I’m usually down the park at the time undertaking landcare activities (aka weeding). One of our team members described me as indefatigable. Sure, I can spend five or six hours weeding in oppressive heat but I don’t feel indefatigable. I feel exhausted. Many a time I have just wanted to lie down under a tree and have a sleep. The ants would like that. I think anxious would be a better term to describe me rather than indefatigable. 

The hot, humid conditions and the shutdown over the Christmas break has led to an even greater explosion of African Love Grass (Eragrostis curvula) across Canberra (Australia). African Love Grass consumes all other grasses in its path and is highly flammable. So yeah, I am focussed on weeding as much of it out as quickly as I can so that the native grasses can provide it with some competition, improve biodiversity and mitigate fire risk. I’m not doing this alone by any means. Do you think I want to kill myself? Fortunately, our urban park has also been designated a conservation zone because it contains a patch of critically endangered box gum grassy woodland and hence a native grass-friendly mowing program has recently been established for it. Without that change to the mowing regime, there would be no hope of containing that Love Grass.

Australian native grasses are touted as a way of mitigating the fire risk of African Love Grass. A patch of Themeda triandra (below) holds the moisture in the ground. It can compete against Africa Love Grass in sunny aspects given a modified mowing program and some TLC. This patch took much weeding and new mowing arrangements to bring it back to match fitness. Themeda triandra is native to Australia, Asia and the Pacific.

African Love Grass is not a fan of shade. In the shade, our lovely weeping grass (Microlaena stipoides) can put a break on it and other tall, weedy exotic grasses.

Microlaena growing under a stand of deciduous trees is flanked by African Love Grass.

Microlaena under a eucalypt in one of Canberra’s nature reserves. 
Not mown, except by kangaroos, completely surrounded by exotic weeds.

Unfortunately, the general population doesn’t appreciate the distinction between native grass and weedy grasses like African Love Grass (ALG), Chilean needle grass and serrated tussock. Except for the Rural Fire Service, who would know this stuff? I certainly didn’t know until I started my landcare activities. Moreover, what government is going to admit to the fire hazard in the heart of our city?  There is no asset protection when ALG is allowed to grow unchecked across Canberra. That’s my personal view. Our local government must indeed be worried. When hot dry winds are predicted, one can hear the constant buzz of municipal lawn mowers racing to slash the grass across the city. But mowing in those conditions can also be a hazard. Late last year, one of our landcare members saw a mowing crew trying to stamp out a grass fire started by their mower on a hot and windy day. Scary. Thankfully the fire was on a median strip.

It must a real conundrum for the government on how best to educate people about the fire mitigating properties of native grasses without encouraging lunatic fire bugs to take advantage of our city’s vulnerability. It would be a brave government that would try that. Instead, governments and oppositions exhort the benefits of increased mowing even though this is to the detriment of any native grasses that might be just hanging in there. Nuance and politics don’t go together. I feel their pain. It is really not practical or economic to massively scale up the sort of weed reduction and rehabilitation efforts that many of Canberra’s landcare teams are undertaking. Nevertheless, call it biodiversity protection, call it landcare, call it what you will, educating people about our local grassland assets and their care can benefit us all by at least starting a conversation on what can be achieved with community support. At the very least, people may be more inclined to mow their ALG infested yards.

Native grasses re-establishing under eucalypts. We have our eye on the African Love Grass beyond the conservation bollard. It will take time to get there but get there, we will.

Thanks for reading this far. I have to rush out now. Bit more ALG to pull out before it gets too warm. Plus, we have identified a second remnant woodland in our suburb and it too needs care. I’ll leave you with this presentation from the Bredbo Rural Fire Service. They know their grass and they know fires. Best we do too.

Kind Regards.
Tracy.