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Competition winners

 



August 2011 Name that weed

Family: Asteraceae
   
Origin: -
   
Common name: velvet groundsel
   
Botanical name: Roldana petasitis, also known as Senecio petasitis

velvet groundsel



What is it?
  With its plush, soft new leaves, velvet groundsel might seem like a big softy, but it’s nothing of the sort. Growing to 2m tall, this big, boisterous Mexican invader has reddish stems, and large, flat leaves covered with fine hairs that give them a velvety texture. It has bunches of yellow, daisy-like flowers in spring and summer, followed by fluffy white seeds.
Why is it wicked?
 

Velvet groundsel is a prolific seeder, and the fluffy seeds are spread far and wide by wind. Stem and root fragments spread by garden dumping form new plants, and established plants also layer, with stems taking root where they touch the ground. Velvet groundsel forms large stands, crowding and shading out other desirable species.

What can you do?
 

If you have velvet groundsel in your garden, there are a few things you can do to make sure that it doesn’t escape into the wild! Remove all flowerheads before seeds start to form, and either burn them or take them to your local refuse transfer station. The same applies to any stem fragments from trimming, and root fragments from digging. The best option, though, is to remove velvet groundsel from your garden altogether, and plant a forest friendly alternative in its place. Contact Weedbusters on info@weedbusters.org.nz for more information.

Alternatives are?
 

Try the native rangiora (Brachyglottis repanda) which also has large, soft leaves, or kawakawa (Micropiper species) which grows well in the shade. Other options are leopard plant (Ligularia tussilaginea) which has large shiny leaves and yellow flowers on tall stalks.

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