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Silver Helichrysum Series

  • Dwarf helichrysum
  • Superior branching; drought tolerant
  • Soft, silver foliage accent plant
  • Low maintenance; not overly aggressive

Medium-sized, flat, needle-like foliage has a soft, silvery color. Features a nice spread, good branching and an interesting foliage shape. 

    • Height:8 - 14" (20 - 36cm)
    • Spread:6 - 14" (15 - 36cm)
    • Exposure:Sun
    • Hardiness Zone:7a - 7b
    • Recommended Cell Size (in millimeters):25 mm
    • Rooting Hormone (IBA + NAA mix):optional
    • Average Days with Mist:15
    • Early PGR Treatment Recommended (after 7 - 10 days):optional
    • PGR applications during rooting:
      Sprays only. Cover the plants and avoid run-off as much as possible. For vigorous products, first application should be done about 7-10 days after sticking, second when needed. Please test before use.

    • Average Propagation Weeks:5
    • Pinch in Propagation:no
    • Comments:Avoid excessive mist for the first several days in prop
    • Media pH:5.8-6.2
    • Best results are achieved if media with the correct pH is used starting with propagation.

    • Fertilizer Needs:moderate
    • Start with low concentrations after roots show and increase with plant development to the recommended levels.

    • Watering:moderate
    • In general avoid drying out or overwatering the substrate as this will affect plant quality and finishing time. Root system will suffer when conditions change from one extreme to the other. “Growing on the dry side“ means letting the substrate become dry (substrate color turns light brown and substrate starts to separate from the pot edge) before watering.

      “Keep constantly moist“ means watering the plants just before substrate becomes dry. Water management in rooting and finishing is half the success and the best way to prevent root-bound diseases, improve performance and control plant quality.

    • Temperature Needs Day/Night: 60-70°F/45-55°F 16-21°C/7-13°C
    • During rooting keep soil temperature measured in the liner at 70°F/21°C until cuttings are well-rooted. After planting the liner, keep temperature up until roots have developed nicely. Afterward follow recommendations.

      The use of “Cool Morning“ treatments will improve plant quality, flower and foliage color, and plant habit, and harden the plants. Lower the temperature by 8-12°F/4-6°C 2 hours before sunrise until 2-3 hours after sunrise. Start treatments after plants are rooted in, well-branched and cover the media (reach the pot edges). To avoid delayed flowering, keep the average day temperature under a close watch and if necessary, increase night temperatures. Finishing of the crop depends on the average day temperature, and positive or negative DIF methods as well as “Cool Morning” can be used to improve plant quality.

    • Pinch after Transplant (unpinched liners):no
    • Light Levels in Foot Candles:4,000 to 7,000
    • Plant Growth Regulators (PGR) (S) = spray / (D) = drench:B-Nine 1,500 PPM (S)
    • Pests and Fungal Diseases:Caterpillars, Aphids, Pythium
    • Comments: Keep moderate feed and water levels to maintain good growth and silver foliage.
    • 4- to 5-inch (10- to 13-cm) Pots, Quarts: 8 to 12 weeks, 1 ppp
    • 6-inch (15-cm) Pots, Gallons:10 to 14 weeks (varies seasonally), 3 ppp
    • 10- to 12-inch (25- to 30-cm) Tubs or Baskets:12 to 16 weeks (varies seasonally), 3 to 5 ppp
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  • Silver Threads
  • Silver Threads Container
Silver Threads
(Flowering Only License)