GUNNERA manicata

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GUNNERA manicata

Giant Rhubarb
Select Item No. GA330

Available

One Portion is usually sufficient for approx. 50 plants.
Please switch to gram for larger quantities.



Plant Description

Life Cycle: Perennial
Family: Gunneraceae
Origin: Mountains of Brazil and Columbia
Distinction: Award of Garden Merit (A.G.M.) from the Royal Horticultural Society.
Special Features: Spectacular foliage plant. Small green to orange blooms open from pinkish flowering stems. Outstanding stand alone plant.
Historical: The genus was named for the Norwegian botanist Johann Ernst Gunnerus.
 
Basic Colour: (green)
Flower Colour: green to orange
Natural Flowering Period: July - August
 
Winter Hardiness Zones: Z6 - Z11
Foliage: huge rounded leaves
Growth Habit: clumping / broad, large
Height with Flowers: 200 cm
Spacing between Plants: 200 cm
Soil Requirements: moist
Location:
Characteristics: solitary plant
Usage: patio plant
Grams per 1000 seeds: 1.49254 Gram
Seeds per Gram
(does not correspond to the number of plants!):
670
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
10 Gram
Plug tray recommended size(s): deep open flats
Sowing Direction:

(14) A warm period of +25 to +30°C [77 to 86°F] and moist conditions after sowing for about 4–5 weeks neutralizes the germination inhibition. The phytohormones which inhibit germination will then break down. At this point the sowing needs very cool conditions, approximately +2°C [36°F]. Initial germination lasts for about 80 days under these conditions. During this period keep in dark cold storage chamber. Then temperature and lighting must be increased gradually.

(20) To obtain best germination results, seeds need temperatures of +22°C [72°F] or more. Moderate, but constant humidity is very important. Gunnera, however, prefers very moist (not wet) and warm (+24 to +30°C) [75 to 86°F] conditions.

Sowing Time Hint: Gunnera prefers very moist (not wet) and warm (+24 to 30°C) [75 to 86°F] conditions.
Sowing to Germination: 3 - 12 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Potting: 8 - 10 weeks
Cutting back at Transplanting: Not Necessary.
Container Size(s): 1 plug per 8/9 cm (3 1/2") / 1-2 plugs per 11/12 cm (4 1/2") / 2-3 plugs per 15 cm (6")
Vernalization: No vernalization required for flowering in the first year.
Forcing: This species is not a suitable candidate for forcing.
Fertilizer: Medium (150-200 ppm)
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