PENSTEMON smallii

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PENSTEMON smallii

Small's Penstemon
[Violet Dusk]
Select Item No. PA250

Also available as:

Available

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



Plant Description

Life Cycle: Perennial
Family: Scrophulariaceae
Origin: North America: Appalachian Mountains.
Special Features: A species of easy culture tolerant of rugged, sharply-drained conditions. Rich flowering. Grows naturally near cliffs, or steep slopes, at the forest's edge, often with a half day's shade. A species which will self-sow in naturalized conditions. Full sun in cool summer climates to semi-shade elsewhere.
 
Basic Colour: (red / scarlet / purple)
Flower Colour: brilliant, purple-lilac with striped white throat
Natural Flowering Period: July - September
 
Winter Hardiness Zones: Z5 - Z8
Foliage: green with a hint of red
Growth Habit: erect
Height with Flowers: 60 cm
Spacing between Plants: 45 cm
Soil Requirements: dry / well-drained
Location:
Grams per 1000 seeds: 0.16667 Gram
Seeds per Gram
(does not correspond to the number of plants!):
6000
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
3 Gram
Sowing Rates/Trays: 2 per cell
Plug tray recommended size(s): 128 / 288
Sowing Direction:

(8) These perennial seeds germinate very irregularly over a long period. Lower temperatures of less than +5°C [41°F] are very effective. Seed trays should not be discarded prematurely. Constant moisture must be maintained. Do not leave in direct sunlight. For Alstroemeria we recommend to keep sowing for 3 weeks at approximately +30°C [86°F], then 3 weeks at +5°C [41°F], then at +21°C [70°F].

Best Sowing Date
(northern Hemisphere, Field condition):
late autumn - early spring
Germination to Transplant: 4 - 8 weeks
Transplanting to Potting: 6 - 10 weeks
Cutting back at Transplanting: Cut-back once to keep more compact.
Container Size(s): 1-2 plugs per 11/12 cm (4 1/2")
Vernalization: There is no current research on vernalization but a prudent recommendation for any perennial would be 6-12 weeks (a few might need 15 weeks!) at an average daily temperature of 40°F (5°C). Exposure to cold may not be necessary for flowering but might improve quality.
Forcing: This species is not a suitable candidate for forcing.
Fertilizer: Light (100-150 ppm)
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