Corydalis ‘Porcelain Blue’ was developed by Hillier Nurseries and made its global debut on our RHS Chelsea Flower Show 2017 garden, where it made a big impression.

The most striking feature of this Corydalis is its electric blue coloured blooms. This is a surprisingly robust garden plant, despite its delicate appearance. The ‘Porcelain Blue’ flowers for the majority of the year typically only fall dormant in late winter. It has a sweet honey like scent, attractive, soft blue-green foliage and bears flowering stems of a delicate light to mid blue. 

In late 2020, it received a prestigious Glass Tulip award, held in The Netherlands for Best Garden Plant.

Corydalis 'Porcelain Blue'

Fact File

Sun Requirements: Full sun to partial shade

Soil: Prefers sand soil type, it does like moist but well drained soil and will grow in acid, alkaline or neutral pH level soil.

Hardiness: Hardy

Size: Grows to approx. 30cm height and up to 8 metres spread

Growing Guide


Position in a sunny or partially shaded spot in any bed, borders or in a container with shelter from the winds .


Water regularly, being conscious that it will not enjoy being waterlogged or in excessively dry conditions.


None required

Complementary Planting Ideas

Corydalis 'Porcelain Blue' in a container

This would work beautifully in a border full of blue-flower accents, like Agapanthus ‘Brilliant Blue’, Pulmonaria ‘Blue Ensign’ and Salvia ‘Crystal Blue’.

It can also make a beautiful feature plant for a container positioned on a patio to enjoy the delightfully sweet aroma.


Corydalis is a genus that includes about 370 different species of annual and perennial, with the majority of these originating from Asia and the Himalayas.

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