Herbaceous Border

I want to make a Herbaceous Perrenial Flowering Border. The area is already prepared and has Clematis on the trellis going up the fence and some annuals at the moment.

The site is 3metres wide and comes out 60cm from the fence

Does anyone have any recommendations on what I can plant?

Soil is Neutral to Slightly Acidic 

The plants could be up to 1metre high without really blocking out the Clematis

I grow phlox.red perennial lobelia(not like the bedding type), alstroemeria,aster,echinacea-

just a few- that don't get that tall

Heleniums, Lobelia Cardinalis, Salvias, Day Lilies, Sedums. You may need a theme to stop it looking bitty.

I like the Perrenial Lobelia. Spotted it in the Garden Centre yesterday. It had a scarlet stem

I was thinking of doing that too. Theres a tonne of bulbs waiting dormant in the fridge at the moment.

Anyway here is the Bed

One of the reasons why so many people are recommending perennial lobelia (I have some myself) is that it is in flower just now. However, you really want a variety of plants that will flower in the Spring, and mid-Summer, and, possibly, in late Autumn.

I'd also echo figrat's comment, that perennial lobelia is particularly vulnerable to slugs, far more so than most other plants.

I was going to suggest a couple of lupins - they flower a lot earlier in the year, though they too are highly vulnerable to slugs.

Perhaps you could do with some more varieties of clematis, to flower at different times to the one you have.

I'm not sure why you're rulling out annuals. Even if you have perennials you'll still need to do some maintence.

i would plant.. penstemons... sedum... echinacea...day lilly...  weigelia (for some form) cransebill geraniums.. grannys bonnets... primulas (shaded by large plants) i could go on but yur bed is not large enough.. i like a mix of all those and flowers throughout year then.. and of course some bulbs..

I'm not ruling out annuals totally. It's just that I have about 6 or 7 other beds and Countless pots closer to the house for annual plants :P

Thanks for all the recommendations by the way guys, some of those flowers are very pretty.

Full sun practically all day. Soil is part clay but I have improved it so its not so heavy. Area stays surprisingly moist.

I have chosen and planted the flowers that I liked and that have a good heighth and spread.

I went for a Pink and White theme which I'm hoping will work well

I chose:

Anemone x Hybrida 'Andrea Atkinson'

Lobelia 'Russian Princess'

Penstemon Pensham 'Amelia Jane'

Leucanthemum 'Broadway Lights'

I will add spring and summer bulbs to this too so I have colour all the year round

Sounds lovely, hope we will see photos next year.