I have a few small plants of Dolichandra unguis-cati (Macfadyena unguis-cati), grown from seed, which are destined for the base of a west-facing wall in our garden on the very dry Greek island of Paros. The hope is that they will grow abundantly and cover the wall in no time. However, I have read some horror stories about this plant producing tubers 40-50 cm long and becoming almost impossible to eradicate. Is this a good climber for the conditions?