Posted: 27/05/2014 at 20:33
I would add a couple of small but wavy grasses like stipa Tennuissima and carex testacea and carex buchanii , some foliage plants like hostas and Heucheras.....sorry Red, if you have these already there.
Allium purple semsation.....I confess I do not know about propagating them. I just leave them alone to increase year by year.but I would expect small bulbs to develop in time for,you to grow on.
Libertia is a grass like evergreen sword like olive coloured perennial that takes up little room. Lilies? Planted deep. Guara lindheimeri corries gold is a stunning tender perennial. Delicate foliage and butterfly white flowers. Take cuttings every summer for continuity. Linum perenne? Blue delicate flowers and foliage. I find eryngiums quite tidy plamts too albeit a little prickly. Hardy salvias and Veronicas are upright compact plamts with blue flowers for weeks. tulbaghia too is neat....glaucous blue/grey foliage amd pink,flowers . Check it out. Scabious too has lots of flowers with minimum foliage. Coreopsis produces flowers from mid summer onwards on neat, small foliage. A Phormium would add impact there too.
Re cuttings, I find it best just to let them tick over in winter.....minimal watering and best not to,pot on during winter. Plastic will drip on plants...condensation....and I would try to keep them as dry as possible overhead. Maybe a glass sheet suspended.? But conservatory best
Ophiopogon nigrescens in your coal pot? Hosta will prob be eaten.
Would love to see other pics Red. My iPad isn't great at showing detail.
I would go for some long flowering plamts like aster frikartii monch, tough echinacea like white swan. Check out small shrubs with colourful foliage ....spirea goldflame, hebe pagei, pittosporum tom thumb, or euonymous emerald n gold. Small perennials like evergreen campanula dicksons gold is a yellow mound with blue flowers. Another geranium is black beauty...almost black foliage with stunning bright blue flowers in summer on a tight compact plant. Try a stunning silver evergreen like helichrysum,,the curry plant. Foliage,is as colourful as flowers and more long lasting.
I think a blue geranium around your tree too. Is ground clear around it? Geranium Orion sprawling around it would look good
Don't like the tiny square grass step onto your lawn. Either bigger or not at all I think.
However, for me your border is narrow, too straight and too clinical. Can you widen it, curve it? Then you could make a border with depth and style