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Fully hardy Agapanthus?

Posted by Simon Smith on March 16, 2011 at 4:11pm in Plants

First off i am just outside belfast and near the coast to give an idea of the climate.

 

Has anyone had good success with any varieties of agapanthus that have survived well in the ground over winter? If so what was the variety, did you mulch it or cover it and how did it come the next year?

 

Thanks

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  • Jenny Bloom March 16, 2011 at 7:18pm

    Not near you so don't know how extreme climate there is but many border type hybrids (ie deciduous and thinner strappy leaves) Agapanthus can survive to about -6 to -10 C e.g. 'Bressingham Blue' (and 'B. White'), 'Loch Hope' 'Headbourne Hybrids' etc. Need free draining (but well fed) soil and mulch over winter. 

    You may get more specific local responses on here, if not you could always get in touch with nurseries in the region that grow border type Agapanthus (use RHS plantfinder?) and seek their specialist advice.

  • Gary Hedges March 16, 2011 at 7:33pm

    Hi,

    I'm in central Scotland and we have had it pretty cold this winter (-18C).

    I cover the agapanthus with all the died back foilage folded onto the crown,

    I uncovered them last week and much to my relief new shoots were under the surface.

  • Chris Auld March 16, 2011 at 7:41pm
    The herbaceous types should all be fine, it got to -20 here in December and mine are all growing back.
  • Simon Smith March 16, 2011 at 9:17pm
    Good to know Chris thanks. Did you mulch them at all or just cut them back

    Chris Auld said:
    The herbaceous types should all be fine, it got to -20 here in December and mine are all growing back.
  • Chris Auld March 16, 2011 at 10:41pm
    Yeah i just fire a bit of woodchip on them.
  • Simon Smith March 17, 2011 at 6:55pm
    Much appreciated.
  • pete March 19, 2011 at 11:09am
      

    We have some herbaceous white ones – don't know what they are but I mulch the crowns with shredded leaves.

     I believe A. campanulatus cultivars are hardiest, down to easily minus 15

     

    Broadleigh Gardens article on Agapanthus3314697522?profile=RESIZE_480x480

  • Linsey Evans March 20, 2011 at 9:10am

    I grow Headbourne Hybrids and Bressingham Blue and the shorter white one (can't remember its name) and don't have any problems.  I didn't even remember to mulch mine this year and they seem to be coming up fine.  I also grow some in a pot (Headbourne Hybrids) and they have been fine for years. 

     

     

  • Mike Petersen March 20, 2011 at 8:22pm

    Hi - Agapanthus 'Enigma' has been going strong for the past 5 years in London, Cambridge & Lincolnshire.  My clients & I have provided protection ranging from nothing to 30g fleece, and they've always come back as strong as the previous.  It's supposed to be an evergreen variety, but in the 'no protection' instances, it is not evergreen... but given that the drainage is very good, we've not worried at all about their survival.

     

    hope this helps.

    Mike

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