Romneya coulteri seeds – (Californian Tree Poppy, Matilija Poppy)


Out of stock


Picture thanks to Jelitto


This beautiful plant has slightly leathery grey leaves which rise from the woody base in the spring and die down again in the winter. The leaves form a shrub-like structure and from this emerge many fat buds which open out to amazing white crinkle pleated  papery petals to form stunning  white poppy  flowers about 15cm wide , which have deep egg yolk yellow centres.  This  beauty  has won the Royal Horticultural Society award of Merit.

It is an extremely beautiful flower which attracts attention whenever it is seen.

It likes very well drained soil, a little on the dry side. and is not a plant for small gardens reaching about 2 m tall eventually and about 1.5m wide .


Sowing advice

Sow the seeds at any time  of the year , but late winter or early spring is best.  Sow them in pots or trays and cover to their own depth with a good quality seed raising mix. Keep them warm (about +18 to +22°C) and moist for the first 4 weeks. Then , ensuring they are moist ,  keep them  at a cold temperature (approx -4 to +4°C)  for another 6 weeks.  If you live in areas which get frosts then put them outside in a sheltered place  for this phase.If you live in districts which do not get frost then seal  your seed pot in a plastic bag to conserve the moisture, and put them in the fridge .

After this time , grow them on at between +5 to +12°C, until they get larger into spring and summer, when the temperatures get warmer.


Additional information



Common Name

Californian Tree Poppy, Matilija Poppy



Maximum Height

approx 2m

Number of seeds in packet

approx 30