AxilDB — Botanical Accession System

Plectranthus verticillatus husbandry

Moderate waterBright indirect lightMildly toxic / irritant

Water: Moderate water
Light: Bright indirect light
Toxicity: Mildly toxic / irritant
Care notes: Easy trailing houseplant: bright light, free-draining mix, regular pinching, and moderate watering.

Cadence: Water when the top 1-2 cm of mix is dry; typically every 5-10 days in active growth, less in winter.
Moisture level: Evenly moist but never soggy.
Drought tolerance: Moderate; wilts if allowed to dry too long.
Wet/dry cycle notes: Soak thoroughly, then drain completely; avoid standing water in saucers.
Seasonal adjustments: Reduce frequency in cooler, low-light months; increase slightly in warm, bright weather.

Intensity: Bright indirect light; tolerates morning sun or light filtered sun.
Duration: About 8-12 hours of bright light daily.

USDA zone: USDA 10-11 outdoors; commonly grown indoors elsewhere.
Cold tolerance: Sensitive below about 10 C; growth slows near 13 C.
Heat tolerance: Handles warm indoor conditions if watered well; avoid prolonged heat above 30 C.
Frost sensitivity: Highly frost-sensitive; frost can kill foliage and stems.
Overwinter instructions: Bring indoors before nights cool; keep bright, cooler, and slightly drier in winter.

Range: Average indoor humidity, about 40-60%.
Dry air tolerance: Fairly tolerant of dry indoor air, but may crisp at edges if very dry.
Misting notes: Misting is usually unnecessary; increase airflow instead of wetting foliage.

Preferred medium: Loose, fertile, well-draining potting mix with added perlite or bark.
pH preference: Slightly acidic to neutral, about pH 6.0-7.0.
Drainage needs: Excellent drainage required.
Growth substrate habit: Shallow-rooting, trailing, and fast-growing.
Substrate recipe notes: Use a standard houseplant mix cut with 25-50% perlite, pumice, or coarse bark.

Type: Balanced liquid houseplant fertilizer.
Strength: Quarter- to half-strength.
Frequency: Every 2-4 weeks in active growth.
Seasonal schedule: Feed spring through early autumn; pause or reduce sharply in winter.
Micronutrient notes: A complete fertilizer with trace elements is sufficient; avoid excess nitrogen.

Interval: Every 1-2 years, or when rootbound.
Pot type: Use a pot with drainage holes; slightly wider than deep is helpful.
Root sensitivity: Low to moderate; roots are fine but recover quickly.
Dormancy consideration: Repot in spring or early summer when growth is active.
Division guidance: Division is optional; stem cuttings are usually easier and safer than dividing dense plants.

Preferred methods: Stem cuttings in water or mix; also easy from node cuttings and layering.
Difficulty: Very easy.
Expected success: High, often above 80% under warm, bright conditions.
Optimal timing: Spring through summer.
Rooting hormone notes: Usually unnecessary; helpful only for older or woody stems.
Tissue culture notes: Not commonly needed for home or small collection use.

Common pests: Mealybugs, aphids, spider mites, whiteflies, and fungus gnats.
Common diseases: Root rot, stem rot, leaf spot, and powdery mildew in stale air.
Treatment notes: Remove badly infested growth, improve light and airflow, and treat pests early with insecticidal soap or horticultural oil as appropriate.
Susceptibility level: Moderate; problems are usually cultural and pest-related rather than severe.
Preventative practices: Avoid overwatering, provide bright light and airflow, pinch for compact growth, and inspect new plants before mixing with the collection.

Pets: Likely low toxicity, but may cause mild stomach upset if chewed; treat as a cautious keep-away plant.
Humans: Generally handled as a low-risk ornamental; sensitive individuals may react to plant contact.
Sap irritant: Sap may cause mild skin or mouth irritation in sensitive people.
Edible?: Not considered a food plant; do not assume edibility.

Dormancy behavior: No true dormancy; growth slows in cool, low-light periods.
Typical bloom season: Mainly spring to summer, sometimes sporadically under good indoor conditions.
Bloom duration: Intermittent clusters over several weeks to months.
Fragrance: Usually faint or not noticeable.
Rebloom tendency: Can rebloom lightly with bright light and regular pinching.
Bloom triggers: Bright light, regular growth, and mature stems.
Pollinator notes: Small flowers may attract generalist insects outdoors.

Growth habit: Trailing, semi-succulent perennial with arching stems that root at nodes.

Rarity: Common in cultivation.
Conservation status: Not evaluated here; no special conservation concern widely cited for common cultivated material.
Reference links: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:454770-1; https://www.gbif.org/species/2926638; https://www.inaturalist.org/observations?taxon_id=327780
Protected species notes: No special protections known for widely cultivated material; check local regulations for wild collection.
Collection restrictions: Avoid wild collecting without permits; use nursery-propagated stock where possible.
Import/export concerns: Standard phytosanitary and pest-inspection rules may apply; check local import regulations.
Invasiveness: Can naturalize or spread from discarded cuttings in mild climates; manage responsibly and avoid dumping plant waste outdoors.
Native range notes: Native to southern Africa; commonly grown worldwide as an ornamental houseplant.