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Tall drought-tolerant plants with dark foliage?
I am looking for a couple of dark shrubs or tall - 1.5-2m - sturdy fuss-free perennials that can take my summer heat, to set against pale sandstone walls at the back of my hot border. If it has flowers, hot colours best! Last summer I tried Cotinus Royal Purple and Weiglea Ruby something. Despite copious watering the Cotinus really struggled and the Weiglea expired in the heat. I also have a Berberis Thunbergii Atropurpurea which survived but is still only 25cm high. Given I am not allowed Dahlias or Cannas I am a bit stumped! Any ideas?
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Pittosporum tenuifolium 'purpureum'. I grew it on a hot dry bank on the south coast of England to 6 foot or so..
Coprosma 'Pacific Night' is drought tolerant, and has imposing foliage. A bit too tender for many parts of England..
Ceanothus. Dark glossy leaves, deep blue, drought-happy.
Anigozanthos 'Big Red'
Salvia guaranitica 'Black and Blue' - dark flowers, over 2m, perennial
Sand Cherry Prunus Cistena
Abutilon ‘Jerry’s Red Wax’ or other upright, tall abutilon shrub
Scoparium ‘Crimson Glory’
How cold does it get in the winter?
Coprosma Repens as Marlorena mentions, such a tough shrub and the Pacific range is really one of the best colour ranges around. Super dark red high gloss leaves. Dark red to burgundy tones in the cooler months with slightly greener tones in the hotter months. Medium growth rate and growing to around a meter tall.
Lophomyrtus Raphii 'Magic Dragon' or 'Kathryn'. Small slightly raised leaves that almost turn glossy in hot weather. A bit faster growing and can reach one and a half meters tall. Their growth habits are similar to a Pittosporum, but leaves far smaller.
I am surrounded by forest and agricultural land and the locals don’t grow much ornamentals, apart from endless red robin hedges, the odd rose and a few bedding plants. Hmm, perhaps there is a reason for that! I am around 400m above sea level with winters down to -5 so far, which sadly rules out Bourganvillea etc., whilst the baking summers impose their own limits.