How do I stop Crocosmia growth

Under the Wildlife and Countryside Act 1981 it is illegal to let it escape onto adjacent property such as fields as it is invasive and swamps our native plants. I think this primarily refers to the common orange montbretia. I found some growing wild in our garden when we moved here some time ago and didn’t realise how invasive it was so I divided and moved it everywhere. Now I have to keep pulling it out and burning it - the advice is do not compost as it won’t kill it. Although that swamps and kills everything cultivated varieties such as Lucifer are nowhere near as invasive. I can’t believe how expensive Lucifer is to buy though when it propagates so easily.

Rosie51

Having attempted to rid myself of a patch where I didn't want it I can only say "good luck". It's as tough as old boots and very resistant to being obliterated. I pull it up every year but obviously miss the odd baby corm, but it does get sparser each year. This is the common orange one, my beautiful yellow one Canary Bird and red Lucifer are much less invasive.

Love those red lucifer, they grow quite tall, leaves are more spear like.

SpringyChicken

You just have to look out for new crocosmia next spring and summer and pull them up when you see them. Persist and you will win the battle.

👍🏻

Rosie51

Having attempted to rid myself of a patch where I didn't want it I can only say "good luck". It's as tough as old boots and very resistant to being obliterated. I pull it up every year but obviously miss the odd baby corm, but it does get sparser each year. This is the common orange one, my beautiful yellow one Canary Bird and red Lucifer are much less invasive.

Apparently you have to be careful where you get rid of the corms, can’t just dump them.
Yes I can just see them popping up in the spring. Just hoping this blanket idea smothers them 😅

You just have to look out for new crocosmia next spring and summer and pull them up when you see them. Persist and you will win the battle.

BlueBelle

Montbretia (the name i know it by) is a little devil for popping up everywhere but what a cracker of a plant it is, I can’t imagine not wanting it to grow.
Sorry that wasn’t helpful to your question
What have you done with all the little corms
I bet a pound to a penny it will pop up next year no matter what you use 🤣

The landscaper bloke gave me some ultra strong weed killer, so sprayed it all first. Once it started to die, I dug it all out by hand with my trowel.
There were actually little corms growing under the Indian stone.
Yes I agree, I love these Crocosmia (George Davidson & Ember glow, I think but they don’t flower as well after so many years.
Dug a load out last year & gave the corms away to friends.

Having attempted to rid myself of a patch where I didn't want it I can only say "good luck". It's as tough as old boots and very resistant to being obliterated. I pull it up every year but obviously miss the odd baby corm, but it does get sparser each year. This is the common orange one, my beautiful yellow one Canary Bird and red Lucifer are much less invasive.

Montbretia (the name i know it by) is a little devil for popping up everywhere but what a cracker of a plant it is, I can’t imagine not wanting it to grow.
Sorry that wasn’t helpful to your question
What have you done with all the little corms
I bet a pound to a penny it will pop up next year no matter what you use 🤣