Seed Variety

Perovskia Bluesette

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Data is gathered from our Elburn, Ill., trials (Zone 5a) for a North American audience. Warm-climate growers: expect 1-2 weeks earlier finishing. Cool-climate growers: expect 1 week slower. Dates based on standard 288 plug size.

Notes/Pitfall Management
Seedlings may be susceptible to damping off. Treat as necessary. Pinch at transplant is beneficial. Use B9/Cycocel as necessary. Grow 'on the dry side'.
Week color desired
Sow week
Plug transplant week
Early Spring
(1 ppp)
(3 ppp)
(1 ppp)
(3 ppp)
(1 ppp)
(3 ppp)
Seed Form: RAW
PlugSize: 288
Seeds/Cell: 1
Plug Crop Weeks: 5-6
Days from 50% to maximum germination: 2-7
Cover Seed: Light cover
Plug Production
Stage 1
Moisture: Level 4
Temperature: 68-77°F
Light: Light
Fertilizer: Less than 100 ppm N
(Less than 0.7 EC)
Stage 2
Moisture: Level 4-3
Temperature: 68-73°F
Light: 6-8 mol·m⁻²·d⁻¹
Fertilizer: 100 to 175 ppm N
(0.7 to 1.2 EC)
Stage 3
Temperature: 64-68°F
Light: 6-8 mol·m⁻²·d⁻¹
Fertilizer: 175 to 225 ppm N
(1.2 to 1.5 EC)
Stage 4
Temperature: 60-65°F
Light: 6-8 mol·m⁻²·d⁻¹
Fertilizer: 175 to 225 ppm N
(1.2 to 1.5 EC)
Vernalization: No
Propagation Key Tips: For forcing info: See Perennials Forcing Guide.
Genetically compact variety requires an active climate. No PGRs needed, except in unfavorable climate conditions, the Alar 1 x spray at 1,500 ppm could be used. Pinching not really needed, optional for smaller containers; pinch at 3 to 4 nodes, approximately 2 to 3 weeks after transplant. Difficult to pinch in plug stage. Spray fungicide directly after sowing to prevent damping off.
Growing on to Finish
Growing on Temperature: (day) 65-68°F (18-20°C)
(night) 57-60°F (14-16°C)
Target Media pH/EC (1:2): 5.8-6.2 pH
1.2-1.4 mmhos/cm
Fertilizer: 175 to 225 ppm N
(1.2 to 1.5 EC)
Daylength: Facultative Long Day
Daylength Notation: Light accumulator – higher light levels increase development and finish.
Finishing Key Tips: Needs an active growing climate with the highest possible light levels. Optimum is more than 15 mol per m² per day. Can grow in lower light levels, but that will increase crop time. Do not start too early in cold nights and lower light levels, which will cause delay. Allow media to dry between watering; avoid growing wet. Monitor EC in pot during active growth to avoid leaf yellowing. One gallon is the perfect size; use 1 multi-seed plug (3 to 4 seeds) or 3 x 288 plug, and no pinch or PGRs needed. For quarts, use a smaller plug size (288) and 1 seed/cell; pinching is optional (leave 3 to 4 leaf nodes), same for PGR spray (1,500 ppm B-Nine - daminozide). Pinching will delay 1 to 2 weeks.