Thompson & Morgan

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Geranium maderense

Giant Herb Robert, Madeira Cranesbill

Half-hardy Perennial

  • RHS Award of Garden Merit
  • The palm tree geranium
Geranium maderense is a magnificent tender perennial. The Madeira Cranesbill is the largest of the Geranium species, and certainly one of the most impressive, reaching a height of 1.5m (4',9"). Although perennial, it often acts as a biennial, producing pretty magenta pink blooms in its second year. But you won't mind the wait - it will give you time to appreciate the exotic-looking, dissected, evergreen foliage that radiates from a stout central trunk. This spectacular RHS AGM species will need some winter protection so it is best grown in the conservatory or a large patio container which can be moved to a frost free position in winter. Height: 150cm (59"). Spread: 100cm (39").

Ideal For:
patio, greenhouse, conservatory, wildlife gardens, exotic garden
Flowering Period:
March, April, May, June, July, August
sun or semi shade
    • 1 x 12cm potted geranium plant

    • Despatch: By end of April 2017
    • £19.99
    • 2 x 12cm potted geranium plants

    • Despatch: By end of April 2017
    • £29.99
Pot up geranium plants and grow them on in warm frost-free conditions. When all risk of frost has passed, gradually acclimatise geraniums to outdoor conditions over a period of 7 to 10 days before transplanting them into their final positions in containers or sheltered borders. Plant geraniums in a sunny or semi-shaded position, in any moist, well drained soil.
Feed and water geranium plants regularly, particularly during hot, dry periods. In autumn, before the first frosts, move containers of Geranium madarense to a bright, frost free position for the winter. Border grown plants must be lifted and repotted if they are to be kept for the following year. During the winter months, take care not to over water, keeping the compost moist but not wet.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.

Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

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