Join the RHS today and support our charitable work
Keep track of your plants with reminders & care tips – all to help you grow successfully
For the latest on RHS Shows in 2021, read more
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
When using this search
Search by plant name, key attributes or both to find plant details and a list of
AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
Join the RHS today and get 12 months for the price of 9
Other common names
Canna indica 'Picasso'
Canna are rhizomatous herbaceous perennials with erect stems bearing ovate leaves, with showy flowers with showy petal-like staminodes and small, coloured petals and sepals, borne in racemes or panicles in summer and autumn
'Picasso' is a failry compact plant with green or bluish-green leaves and showy yellow flowers boldly spotted with red, from mid summer to early autumn
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect West-facing or South-facing
MoistureMoist but well-drained
SoilChalk, Clay, Loam, Sand
pHAcid, Alkaline, Neutral
Time to ultimate height
Outdoors grow in a sheltered site in fertile soil in full sun, planting in early summer once frosts have passed. Water freely in dry weather and apply a high potassium fertiliser monthly. Lift the rhizomes in autumn when frost blackens the foliage. Store over winter in barely moist peat-free potting mix or leaf mould in frost-free conditions. In mild areas leave in the ground but cover with a dry mulch. Further canna cultivation advice
Propagate by seed at 21°C (70°F) in spring or autumn. Soak seed in warm water before sowing. Cultivars may not come true from seed. Propagate by division in early spring
Suggested planting locations and garden types
Flower borders and beds
Architectural City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants
Pruning Deadhead to promote continued flowering. Leave to dieback in autumn
Pests Glasshouse red spider mite, slugs and caterpillars may be troublesome
Canna can be susceptible to a virus
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.