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Dendroseris (Robinson Crusoe Islands' Cabbage Trees) & Robinsonia

Robinson Crusoe Islands' Cabbage Trees are members of the daisy or sunflower family (Asteraceae) and endemic to the Juan Fernández islands in the southeastern Pacific. This archipelago is located some 400km off the southwestern coast of Chile. They are amongst the rarest plant species in the world and several species are threatened by extinction for severe grazing of introduced animals and ongoing destruction of their natural habitat. In general they have a similar habit to the however not closer-related Sonchus species (Giant Sow Thistles) from the Canary islands. They occur in a comparable habitat with permanently stable, rather cool temperatures throughout the yearw which lead to a convergent evolution. Most Dendroseris and Robinsonia species make a woody, branching stem with sometimes very large, ornamental leaves and terminal umbels of white to yellow or rich orange flowers. All offered species are excellent, easily cultivated pot or container plants for any rich, well drained soil in a sunny (winter) to partially shaded (summer) spot. In winter keep plants drier at a minimum of some 10°C with a good air ventilation. Dendroseris and Robinsonia are nothing but unique and utmost showy plants which are extremely rare in cultivation and seed is just as rare to obtain as are plants in nature.
Sow the very small seeds flat on any humus rich, very well drained soil in a sunny spot at some 20°C throughout the year. Sowings shall not be exposed to temperatures above 25°C, for this will inhibt germination or may even destroy seeds! Very thinly cover seeds with soil and keep substrate always moist but never wet. Germination starts after some 10 days and is completed after 4 weeks. After germination move seedlings to partial shade (summer) or full sun (from autumn to spring). Keep slightly drier and very sunny in winter at a minimum of some 10°C. Seedlings will grow quite fast in most Dendroseris and Robinsonia species and may reach flowering size within five years (Dendroseris pinnata within 10 years).
10 seeds per package.
Articles
Dendroseris litoralis (Juan Fernández Cabbage Tree)

Dendroseris litoralis (Juan Fernández Cabbage Tree)

300 (450), Juan Fernández Cabbage Tree is a tall and broad, branching woody shrub with very large (up to 40cm long!), oval, fresh green, glossy leaves in terminal rosettes and pendulous, rich orange flowers on long peduncles. It is native of the island of Robinson Crusoe (Isla Más a Tierra). A nothing but spectacular plant for a container cultivation. For any humus rich, well drained soil in a partially shaded (summer) to sunny (winter) spot. In winter keep plants drier at a minimum of some 10°C. V-VII.

A foto from this species is shown here: Dendroseris litoralis (flowers).
10 seeds per package.

price (plus Shipping Costs)
seed package7199 € 17,90
Dendroseris marginata (Juan Fernández Cabbage Tree)

Dendroseris marginata (Juan Fernández Cabbage Tree)

300 (450), Juan Fernández Cabbage Tree is a fantastic, tall and broad, rarely branching woody shrub with very large (up to 40cm long!), oval, fresh green, glossy leaves in terminal rosettes. A threatened species due to habitat loss. It resembles Dendroseris litoralis and differs by somewhat smaller, yet still large, pendulous, rich orange flowers. It is endemic of the island of Juan Fernández. A spectacular plant easily grown in a large container in any humus rich, well drained soil in a partially shaded (summer) to sunny (winter) spot. In winter keep plants drier at a minimum of some 10°C. Handselected seeds from plants grown in Europe. V-VII.
10 seeds per package.

price (plus Shipping Costs)
seed package9506 € 19,90
Dendroseris micrantha

Dendroseris micrantha

200 (300)cm, makes several woody branches, each topped by a rosette of large, elongated oval, fresh green leaves wiht slightly serrated margins and a branching inflorescence of numerous white flowers. It is native of the island of Robinson Crusoe (Isla Más a Tierra). A highly ornamental species. For any humus rich, well drained soil in a partially shaded (summer) to sunny (winter) spot. In winter keep plants drier at a minimum of some 10°C. V-VII.

A foto from this species is shown here: Dendroseris micrantha (habit and dried flower stalk).
10 seeds per package.

price (plus Shipping Costs)
seed package7198 € 7,90
Dendroseris pinnata

Dendroseris pinnata

250 (400)cm, has a single tall, woody stem topped by a rosette of pinnatisected, glossy leaves and a branching inflorescence with uncountable yellow flowers. It has a very similar habit to look-alike species such as Sonchus arboreus or Soncus palmensis from the Canary islands. It is simply a fantastic, palm-like looking species! It is native of open spots in mountain woods on the islands of Robinson Crusoe (Isla Más a Tierra). For any humus rich, well drained soil in a partially shaded (summer) to sunny (winter) spot. In winter keep plants drier at a minimum of some 10°C. V-VII.

A foto from this species is shown here: Dendroseris pinnata (leaf rosette of a young plant).
10 seeds per package.

price (plus Shipping Costs)
seed package7197 € 9,90
Dendroseris pruinata

Dendroseris pruinata

150 (300)cm, makes stout, branching stems crowned by dense rosettes of large, lanceolate, yellowish-green leaves and a lose inflorescence with numerous yellow flowers. An utmost showy species! Native of steep coastal cliffs on the islands of Robinson Crusoe (Isla Más a Tierra) and Santa Clara. For any humus rich, well drained soil in a partially shaded (summer) to sunny (winter) spot. In winter keep plants drier at a minimum of some 10°C. V-VII.

A foto from this species is shown here: Dendroseris pruinata (growing habit).
10 seeds per package.

price (plus Shipping Costs)
seed package7196 € 12,90
Robinsonia gayana

Robinsonia gayana

100cm, a medium tall species with several woody stem crowned by brilliant yellow flowers above light green leaves in a dense rosette. It is native only on the island of Robinson Crusoe (Isla Más a Tierra). An excellent pot plant! For any humus rich, well drained soil in a partially shaded (summer) to sunny (winter) spot. In winter keep plants drier at a minimum of some 10°C. V-VII.

A foto from this species is shown here: Robinsonia gayana (young, unfolding inflorescence).
10 seeds per package.

price (plus Shipping Costs)
seed package7195 € 8,90