Lamium

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Orchid Frost (Lamium maculatum)

Propagation

Orchid Frost can be propagated in various tray sizes including 32,50,72,84, and 105’s. Stick one cutting per cell. Propagation Cycle: 4 weeks

Media

  • Choose a well-drained aerated propagation media
  • Avoid media containing peat moss which will hold too much water
  • Choose a blended media with other components or inorganic media such as Oasis® or Rockwool®

Bottom Heat

  • Bottom heat will promote healthy root development.
  • Maintain bottom heat at 70-75°F/21-24°C.
  • Mist will cool the media temperature. Monitor media temperature closely and frequently.

Rooting Hormones

  • Lamium will benefit from the use rooting hormone. Time to root and uniformity in rooting will be improved with use of a hormone.
  • Either liquid or powder formulations work equally well. Choose a product with up to 3000 ppm IBA.

Misting

  • Average days with mist vary from 6-9 days depending on environmental conditions in the greenhouse.
  • Mist cuttings so they remain turgid but avoid over misting that results in saturated media.
  • Over misting will result in slow rooting and possible problems with root rot and botrytis.

Pinching

  • Pinch cuttings in week two of propagation leaving at least three nodes to promote branching prior to transplanting.

Growing On

Media
Choose a media with the following traits:

  • Good aeration
  • Porosity between 5-15%
  • Sterile

Irrigation /Fertilization

  • Avoid excess irrigation throughout production. Lamium prefer to be kept moist but not consistently wet.
  • Fertilizer Regime
    • Begin fertilizing 2 weeks after transplant.
    • Choose a complete balanced fertilizer complete with minor elements.
    • A periodic feeding of 200-250 ppm constant liquid feed.
    • Alternate with calcium nitrate on a regular basis and provide a complete minor element program.
    • A slow release product may also be used to supplement a constant liquid feed program and may provide improved performance for the consumer.
  • Maintain pH between 5.5-6.3
  • Optimum EC is 2 to 2.5 mmhos. Provide periodic clear water application if excess salts accumulate.

Temperature/Humidity

Establishing temperature: 65°F/18°C average daily temperature
Temperatures for growing on: 55-70°F/13-21°C average daily temperatures and 55-60°F/13-15°C night temperatures.

  • Low temperatures will promote growth but slow development.

Relative Humidity:
Maintain relative humidity below 70% and provide good air circulation to avoid problems with botrytis.

Light
Silver Spike prefers bright light. Retractable roof greenhouses and field production are recommended where possible. For best results provide:
Provide:

  • 5000 foot candles/53,800 lux minimum
  • 6000 foot candles/64,600 lux maximum


Spacing

Establish plants pot tight than space to:

  • 4” pots – 5-6” centers (approximately 2 per sq. ft.)
  • 6” pots/1 gallon – 14” centers
  • 8” pots – 18” centers

Pinching
1st Pinch- week 2 of propagation
2nd Pinch- trim plants as needed to shape

Plant Growth Regulators
Cold temperatures and high light are the best control methods for prevent stretch. Growth regulators are generally not required.

Insect and Disease Concerns
Insects

  • Fungus Gnats
  • Whiteflies

Diseases

  • Botrytis
  • Root and stem rots

CROP SCHEDULING

Product Form # Liners per pot Total Crop Time (weeks)
4” 1 6-8
6” / 1 gallon 1-2 8-10
8” 3 10-12

 

We hope the information provided will be helpful. It is based upon data and knowledge (including information provided by the recipient) considered to be true and accurate, but without independent investigation and is offered for the recipient’s consideration, investigation and verification, but we do not warrant the results to be obtained. Please read all statement, recommendations, or suggestions in conjunction with any conditions of sale or use which apply to any products, or systems recommended by us. No statement, recommendation, or suggestion is intended for any use which would infringe any patent/copyright.

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