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(Very) tall grasses

What tall grasses is everyone growing?

I've had both miscanthus x giganteus (giant grass) and arundo donax (giant Spanish reed) planted since last year and it's great to see how quickly they're taking off after being cut to the ground in early spring. They're a great alternative to bamboo for those looking for drama and height but are worried about aggressive runners from some bamboo types.

A fairly new to cultivation (AFAIK) tall grass is  triarrhena lutarioriparia (giant Chinese grass) which is pictured below. This one is at the top of my wanted list for this year.

 
Growing tropical and desert plants outdoors in West Yorkshire
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  • PlantmindedPlantminded Posts: 3,488
    That's amazing - it would certainly block off the sight of my neighbour's "home office"!  The tallest grass I grow is Miscanthus sinensis zebrinus, so tiny by comparison, but I have several bamboos reaching about 3 meters in height.  Have you found a source for this giant grass?
    Wirral. Sandy, free draining soil.


  • That's amazing - it would certainly block off the sight of my neighbour's "home office"!  The tallest grass I grow is Miscanthus sinensis zebrinus, so tiny by comparison, but I have several bamboos reaching about 3 meters in height.  Have you found a source for this giant grass?
    The only nursery who seem to have it in the UK is Big Plant Nursery: https://www.bigplantnursery.co.uk/shop/plants/flowers-and-grasses/triarrhena-lutarioriparia/


    Growing tropical and desert plants outdoors in West Yorkshire
    INSTAGRAM/ YOUTUBE
  • GardenerSuzeGardenerSuze Posts: 5,633
    @carletonexotic Wow that is tall I have already written it in my note book. I guess the question is... invasive or not hardy which I now consider with anything new.
    My tallest grass is Miscanthus Kleine Fontane, stunning in November. This year I managed to get Stipa Gold Fontaene which I hope will grow tall. The one grass I would not be without is Molinia The Rocket, the whole plant is a wonderful yellow/ gold in September/ October.
     Retired Gardener, new build garden, clay soil, South Notts.


    The more I garden the less I know but the more pleasure I get from it. Monty Don 
  • @carletonexotic Wow that is tall I have already written it in my note book. I guess the question is... invasive or not hardy which I now consider with anything new.
    My tallest grass is Miscanthus Kleine Fontane, stunning in November. This year I managed to get Stipa Gold Fontaene which I hope will grow tall. The one grass I would not be without is Molinia The Rocket, the whole plant is a wonderful yellow/ gold in September/ October.
    Hardy to -18℃ apparently. Comments on various German forums I've read (for they've been growing it there for a while) tell me a root barrier or large pot is needed. It does send out runners at a depth of about 15cm. 

    I've added the grasses you mentioned to my list - you can't beat a bit of autumn interest!
    Growing tropical and desert plants outdoors in West Yorkshire
    INSTAGRAM/ YOUTUBE
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