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Annual climbers planted in a large terracotta pot

I would like to combine Rhodochiton Atrosanguineus and Ipomoea Heavenly Blue, in the same pot.  The terracotta pot is 40cm high x 45cm diameter, in a 'dumpy' shape, so holds quite a lot of compost.  It is placed in front of a downpipe on a south facing wall.  I already have a purpose made plastic covered trellis which curves around the downpipe and have grown clematis there in the past, with mixed success!  Does anyone have any advice, on whether this plant combination would work, and if so what type of compost and feed I should use?  I am also not sure how many plants of each type I would need ...... 


  • Busy-LizzieBusy-Lizzie Posts: 20,441
    I have planted the Ipomoea in a pot, ordinary multi purpose compost, just one or two plants and they grew pretty well. I fed them slow release fertiliser and watered quite often in summer. But I didn't plant another climber with them.
    Dordogne and Norfolk
  • Thanks Busy-Lizzie.  Did you start your Ipomoea from seeds, or buy them as plants?  I don't have a greenhouse, or much free windowsill space, and was thinking of buying them as plants later in the spring or early summer.
  • BiljeBilje Posts: 727
    Peter there's another thread running re Ipomoea seeds...the best advice seems to be don't sow until May and I can say they germinate well and quickly. . I can't say I've ever seen them for sale as growing plants but perhaps I've never looked! 
  • Busy-LizzieBusy-Lizzie Posts: 20,441
    I started them from seed. I have a Greenhouse. Windowsill? Yes, they are quick, did it too soon one year and they were trying to climb over other plants in the GH!
    Dordogne and Norfolk
  • Thanks Bilje and Busy-Lizzie for your helpful hints and I have also looked at the other thread on Ipomoea.  I think I will try growing the Ipomoea from seed in May and make room on a windowsill, as they seem to grow so fast! In the absence of any advice on the other plant, Rhodochiton Atrosanguineus (purple bells) I think I've previously seen them in garden centres, so I will just try to find one, and plant it in the same pot with perhaps 2 or 3 of the Morning Glories. Fingers crossed!
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