Delphinium Border Collection

No summer border is complete without its fair share of delphiniums – the most statuesque towering spires for any garden. More
6 x 9cm plants, for spring planting 510658-6 £23.50 Delivery late March
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When in stock, please allow up to 2 weeks for delivery.
2 x 2 litre plants, for spring planting 510658-2 £23.50 Delivery late April
[?]
When in stock, please allow up to 2 weeks for delivery.
More Details

No summer border is complete without its fair share of delphiniums – the most statuesque towering spires for any garden.

Create the perfect Delphinium border with Sarah's favourite varieties.

This collection contains 3 plants each of:
Genus Delphinium
Variety Black Knight and Summer skies
Type Hardy Perennial
Border Position Back
Soil Type Chalky, Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained, Well-drained
Height 1.5m (5ft)
Spacing Plant 50cm (20in) apart - best in groups of 3 or more. 75cm (30in) spread.
Sowing, Seeds, Planting Delphiniums love well-drained soil, but are hungry feeders. This means adding plenty of grit on heavy soils to help with drainage, if they sit wet in their dormant winter season, they can die, so make sure you prevent this. To aid quick establishment, sprinkle mycorrhizal fungi (Rootgrow) into the base of the planting hole. Add plenty of organic matter added to their planting holes when they first go in and to aid quick establishment, sprinkle mycorrhizal fungi (Rootgrow) into the base of the planting hole. Correct spacing is also important to help avoid mildew.
Care Tips Feed regularly throughout their growing season. You want to use something slow release such as organic chicken manure pellets. Do this a couple of times in summer and try to repeat once in autumn before the plants die down. The other vital thing with delphiniums is the staking as any strong wind or heavy rain will flatten them and break their hollow stems. Cut flower spikes and leaves right to the ground in July and they will leaf up and flower again in August and September. Unfortunately slugs love delphinium shoots, so a dose of Nemaslug will help protect your plants.
Flowering June-July and/or August-September, will flower the following year after sowing seed
Vase Life These should last 7 days in the vase. For tall spikes a cane can be inserted into hollow stem to prevent bending and breaking. Pick when most flowers are open. Do not put near fruit bowls as they are senstive to ethylene gas which is omitted when fruit ripens.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Advice
Caring for delphiniums

Delphiniums make wonderful summer vertical plants and cut flowers - find out how to get the most from them in your garden.

How to grow Delphiniums

We have all got to grow delphiniums – the most statuesque towering spires for any garden. They make brilliant cut flowers too.

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Delivery

Plant Delivery - When in stock, please allow up to 2 weeks for delivery.

Click here to find out more information about our delivery rates and times.

Delphinium Border Collection reviews

* - - - - Average based on 1 review
Very disappointed

* - - - -

Reviewed 11th July 2017 by Julie Coad

Have ordered lots of plants from this website and have always been delighted with the results.
Planted these last Autumn as directed now in July and no sign of them.
Everything else is flourishing!

Reply from the Sarah Raven Team:

"Thank you very much for your feedback.

We are sorry to hear that your border collection is not performing as expected. Please do contact our Customer Service Team on 0345 092 0283 or info@sarahraven and they will be more than happy to assist you in this matter.

Kind regards,
The Sarah Raven Team"

Posted 12th July 2017