Part 07 : Repotting & Traditional Propagation

Part 1: Re-potting Mechanics & Timing

1. Optimal Seasonal Timing

• Temperate Species (Dionaea, Sarracenia, Temperate Drosera): Re-pot during late winter to early spring (July – August in South Africa), right before growth scapes emerge. Re-potting during deep dormancy minimizes flower scape abortion and root shock.
• Subtropical & Tropical Species (Nepenthes, Mexican Pinguicula, Heliamphora): Re-pot during early spring to early summer when ambient temperatures are consistently above 18°C and active growth is underway.

2. Step-by-Step Repotting Protocol

1. Media Pre-Hydration: Always pre-soak fresh substrate with pure RO or distilled water (< 15 PPM) prior to potting. Never pot plants into dry peat or dry sphagnum moss.
2. Un-potting & Media Extraction: Gently compress the pot sides and slide the root ball out. Gently tease away old, compacted media. Avoid tearing fine feeder roots.
3. Root Inspection & Sanitation: Trim off dead, blackened, or mushy root tissue using pruners sanitized with 70% ethanol or hypochlorous acid.
4. Positioning & Density: Center the plant crown or rhizome so it sits slightly above the substrate surface. Pack the pre-hydrated media firmly around the root zone to eliminate air pockets, ensuring the growing point (crown) is not buried below the soil line.
5. Initial Top-Flush: Water thoroughly from above with 0 PPM water to settle the media.

Part 2: Traditional Vegetative Propagation Protocols

Protocol 1: Rhizome Division (Sarracenia & Dionaea)

• Timing: Late Winter / Early Spring.
• Method:
  1. Unearth the mature rhizome and wash away all substrate using pure water.
  2. Locate natural growing points (crowns/growing tips) along the main rhizome.
  3. Using a sterilized scalpel, cut the rhizome cleanly between growth points. Ensure each division retains at least 1–2 active growing tips and several healthy roots.
  4. Dust the raw cut surfaces with sulfur powder or treat with a biological fungicide (Bacillus subtilis) to prevent fungal infection.
  5. Pot divisions into fresh 50/50 Peat/Perlite mix.

Protocol 2: Leaf Pullings (Dionaea, Drosera, Mexican Pinguicula)

• Timing: Spring to Mid-Summer (Active Growth Phase).
• Method:
  • Dionaea & Pinguicula: Peel the leaf downward toward the base, ensuring you capture the white, fleshy tissue from the very base of the crown/rhizome. Torn leaf blades without basal tissue will not generate plantlets.
  • Drosera: Cut healthy, mature leaves into 1 – 2 cm segments.
• Propagation Setup: Lay the pullings flat, underside down, on damp Long-Fiber Sphagnum (LFS) moss or pure moist peat. Maintain 80% – 90% relative humidity under bright, indirect light or grow lights. Adventitious plantlets will form along the leaf margins within 3–6 weeks.

Protocol 3: Stem Cuttings (Nepenthes)

• Timing: Spring to Mid-Summer.
• Method:
  1. Select a vining stem with mature, healthy nodes.
  2. Cut 2–3 node segments using a clean, sharp blade. Make a straight cut $1\text{ cm}$ above the top node and an angled cut 2 cm below the bottom node.
  3. Trim leaf blades on the cutting by 50% to reduce transpiration water loss.
  4. Dip the bottom node into a carnivore-safe rooting hormone powder (IBA-based, zero added fertilizer).
  5. Insert the cutting into a well-aerated media mix (70% LFS / 30% Perlite). Place under high humidity (> 80%) at 22°C – 28°C. Rooting typically occurs in 6–10 weeks.

Protocol 4: Root Cuttings (Drosera & Cephalotus)

• Timing: Late Winter / Early Spring.
• Method:
  1. Unpot mature plants and identify thick, fleshy roots (Drosera capensis, D. binata, Cephalotus).
  2. Snip off healthy root sections into 2 – 4cm} lengths.
  3. Lay the root pieces horizontally on pre-soaked peat/sand media and cover with a thin 0.5 cm layer of media.
  4. Keep damp under warm, bright conditions. New shoots will break through the surface within 4–6 weeks.

Propagation Method & Species Summary

Genus	Primary Propagation Method	Optimal Substrate	Humidity Requirement	Success Rate
Dionaea	Rhizome Division / Leaf Pullings	50/50 Peat / Perlite	70% – 90% (Pullings)	High 85%+
Sarracenia	Spring Rhizome Division	50/50 Peat / Perlite	Standard Outdoor / Greenhouse	Very High 95%+
Drosera	Root Cuttings / Leaf Snippings	Pure Peat or LFS	80\% – 90\%	High 90%+
Pinguicula	Fleshy Leaf Pullings	100\%$ Damp LFS or Pumice Mix	$80\% – 90\%$	High ($90\%+$)
Nepenthes	Vine Stem Cuttings	$70% LFS / 30% Perlite	85% – 95%	Moderate 70% – 85%
Cephalotus	Root & Leaf Pullings	50/50 LFS / Perlite	80% – 90%	Moderate 60% – 75%

Post-Propagation Recovery & Aftercare

1. Humidity Dome / Tent: Place newly taken cuttings and leaf pullings in high-humidity prop domes (80% – 95%RH) to prevent desiccation before root systems develop.
2. Gradual Hardening Off: Once plantlets develop 3–4 true leaves and visible roots, gradually vent prop domes over 7–10 days to acclimatize foliage to ambient greenhouse/room humidity.
3. Avoid Feeding Un-rooted Cuttings: Never apply foliar sprays or feeding mechanisms to un-rooted cuttings or freshly divided rhizomes until active root structures are verified.