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Danica Globe Arborvitae (Danica Arborvitae) care

Thuja occidentalis 'Danica'

Also called Danica Globe Arborvitae, Danica Arborvitae, Globe Arborvitae, Danica White Cedar.

RHS H7USDA 2-7Pet-safeIndoor 18–24 inches tall (45–60 cm) and equally wide after 20 years

Watering rhythm

Bright indirect light (just back from a sunny window)

Moderate — keep soil evenly moist, especially in heat

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Light

Bright indirect light (just back from a sunny window)

Soil

Moist, well-drained, adaptable

Humidity

Moderate (40–70%)

Temp

-40°C to 35°C

Pet safety

Pet-safe

Mature size

18–24 inches tall (45–60 cm) and equally wide after 20 years

Care at a glance

Light

Bright but filtered. Danica Globe Arborvitae burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Grows well in full sun to partial shade (3–6 hours of direct sun); in hot climates, light afternoon shade improves performance and prevents foliage scorch, but deep shade results in loose, open growth. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering danica globe arborvitae: moderate — keep soil evenly moist, especially in heat. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Water deeply once or twice per week during the first 1–2 growing seasons to establish; once established, water during dry periods to keep the root zone from drying out completely, as it is less drought-tolerant than junipers.

Soil and pot

Danica Globe Arborvitae grows best in moist, well-drained, adaptable. Prefers moderately fertile, moist but well-drained soil; adapts to a range of pH from 5.5 to 7.5 and tolerates heavier soils better than most conifers, provided drainage is adequate. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Danica Globe Arborvitae sits happiest at around Moderate (40–70%) humidity and -40°C to 35°C (-40°F to 95°F). Naturally adapted to the humid, continental conditions of north-eastern North America; tolerates moderate garden humidity well, though good air circulation reduces risk of Thuja blight in persistently damp climates. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed danica globe arborvitae sparingly. Apply a mild, balanced slow-release fertiliser (such as a holly or evergreen formula) once in early spring and optionally again in early autumn; avoid high-nitrogen feeds that promote soft, disease-prone growth. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on danica globe arborvitae in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Thuja blight (Didymascella thujina) — A fungal disease causing browning of inner foliage and shoots, especially prevalent in wet, humid conditions; compact forms with dense foliage are particularly susceptible. Improve air circulation by spacing plants adequately and avoid overhead irrigation.
  • Bagworms (Thyridopteryx ephemeraeformis) — Caterpillars create distinctive silk-and-foliage bags that hang from branches, consuming foliage from inside and causing dieback. Hand-pick bags during dormancy in winter and treat active infestations with Bacillus thuringiensis (Bt) spray in late spring when caterpillars are small.
  • Winter bronzing and desiccation — Foliage naturally bronzes in cold weather (considered ornamental), but in exposed positions drying winds can cause permanent browning and dieback. Protect newly planted specimens with a hessian windbreak for the first 1–2 winters.

Propagation

Semi-hardwood cuttings of 8–10 cm taken in late summer root readily in a cold frame with IBA hormone treatment; rooting usually occurs within 6–10 weeks. Established plants can also be propagated by mound-layering lower branches. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Danica Globe Arborvitae is pet-safe. Thuja occidentalis (arborvitae) is listed as non-toxic to dogs, cats, and horses on the ASPCA Non-Toxic Plant list. Ingestion of plant material may still cause mild, transient gastrointestinal upset in sensitive individuals, but it is not considered a toxic plant. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Danica Globe Arborvitae care — frequently asked questions

What is the common name for Thuja occidentalis 'Danica'?

Thuja occidentalis 'Danica' is most commonly called Danica Globe Arborvitae, but it is also known as Danica Globe Arborvitae, Danica Arborvitae, Globe Arborvitae, Danica White Cedar. The names refer to the same species, so care instructions for Danica Globe Arborvitae apply identically to anything sold as Danica Arborvitae.

How much light does danica globe arborvitae need?

Danica Globe Arborvitae grows best in bright indirect light (just back from a sunny window). Grows well in full sun to partial shade (3–6 hours of direct sun); in hot climates, light afternoon shade improves performance and prevents foliage scorch, but deep shade results in loose, open growth.

How often should I water danica globe arborvitae?

Water danica globe arborvitae moderate — keep soil evenly moist, especially in heat. Water deeply once or twice per week during the first 1–2 growing seasons to establish; once established, water during dry periods to keep the root zone from drying out completely, as it is less drought-tolerant than junipers. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is danica globe arborvitae toxic to cats and dogs?

Danica Globe Arborvitae is pet-safe. Thuja occidentalis (arborvitae) is listed as non-toxic to dogs, cats, and horses on the ASPCA Non-Toxic Plant list. Ingestion of plant material may still cause mild, transient gastrointestinal upset in sensitive individuals, but it is not considered a toxic plant.

What USDA hardiness zone does danica globe arborvitae grow in?

Danica Globe Arborvitae is rated for USDA zone 2-7 and RHS hardiness H7. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Danica Globe Arborvitae deep-dive guides

Every aspect of danica globe arborvitae care, each with its own calibrated guide:

Featured in these plant shortlists

Danica Globe Arborvitae qualifies for 7 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Danica Globe Arborvitae is also known as Danica Globe Arborvitae, Danica Arborvitae, Globe Arborvitae, and Danica White Cedar.