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The BIGGEST gunnera to be found used to be down Cot Valley, St. Just,W. Cornwall. In it's wisdom, the council, or National Trust, has recently dug it up, with JCB's to reclaim the land to as it was before gunnera. A shame in one way, but there we are. They were there as a fixture for more than 50 years ! But then, it is a ginormous plant, thrives in the right conditions, and like the infamous knotweed, can be unstoppably invasive if left to it's own devices.
Can they be grown from seed? If yes when and how please.
Help me please? I purchased a much longed-for Gunnera back in the "summer". It is in a large pot lined with thick black polythene to keep it damp. From 3 leaves it now has 7 largish leaves. I am concerned this morning as there is thin ice on the birdbaths and it is under 10C in the potting shed.
I can fold the leaves over the crown but they are not dead [yet?].
I could get someone to lift it into a nearby shed but it is dark in there.
I can fold the leaves over straw, cover with thick bubble wrap?
It is by a pond and fairly sheltered. It has grown on well in 4 - 5 months so hope not to lose it if it gets really cold again.
Look forward to advice. Thanks.
I have a Gunnera which I grow in a pot to stop it growing too big,it has to be well watered during one of those dry spells and I use the old big leaves to protect next years new stems/leafs.I first saw this plant in Cornwall in a big garden it was fantastic.I also saw one at ford abbey where they have a wonderful bog garden.(lovely to visit in spring).My Gunnera I grow by my front pond and it has survived so far.