PENSTEMON smallii

Small's Penstemon

Jelitto Perennial Seeds: PENSTEMON smallii - Small's Penstemon Jelitto Perennial Seeds: PENSTEMON smallii - Small's Penstemon

Id-Code: PA 250
Family: Scrophulariaceae
Origin: North America: Appalachian Mountains
Special features: A species of easy culture tolerant of rugged, sharply-drained conditions
Colour: Brilliant, purple-lilac with striped white throat
Natural Flowering Period: July - September
Winter Hardiness Zones: Z5-8
Growth Habit: Upright
Foliage: Green with a hint of red
Height with Flower: 60 cm (24'')
Spacing between Plants: 45 cm (18'')
Soil Requirement: Well-drained. Grows naturally near cliffs, or steep slopes, at the forest's edge, often with a half day's shade, pH 5.2 - 6.2
Location: Full sun or partial shade; tolerant of more sun in cooler climates
Use: Plant in drifts in naturalized settings with Allium cernuum, Oenothera missouriensis and Verbascum phoeniceum 'Violetta'
Specialities: A species which will self-sow in naturealized conditions.
Also available as JELITTO GOLD NUGGET SEED® (PG 250)

Cultural Tips:
Grams per 1000 seeds: 0,143
Seeds per Gram: 7000
Seeding Recommendation: 3 g / 1000 plants
Sowing Rate: 2 seeds per cell
Plug tray recommended size(s): 128 or 288
Germination: These perennial seeds germinate very irregularly over a long period. Lower temperatues 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.

Scheduling:
Best Sowing Dates: November - March
Sowing to Germination: 4 - 8 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Salable Plant: 6 - 10 weeks
Cutting-Back at Transplanting: Cut-back once to keep more compact

Growing On:
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.
Fertilization: Light (100-150 ppm)

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