Endura Scarlet Verbena (Garden Verbena) care

Light

Endura Scarlet Verbena needs sun on the leaves, not just bright ambient room light. Full sun of at least 6 hours daily is required for the most vibrant scarlet colour and heaviest flower production. Even brief periods of shade cause stems to elongate and reduce flowering significantly; Verbena is one of the most sun-demanding summer bedders. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water endura scarlet verbena when the top 3-4 cm of soil is dry, roughly every 5-8 days. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Endura Scarlet has excellent drought tolerance once established; avoid overwatering which quickly causes root rot. Water deeply and infrequently rather than little and often. Reduce watering frequency in cool or cloudy periods.

Soil and pot

Endura Scarlet Verbena grows best in well-drained, light, moderately fertile soil or loam-based compost. A neutral to slightly alkaline pH of 6.5-7.5 is ideal. Avoid heavy, moisture-retentive soils or peat-heavy composts — drainage is the single most important factor for success. Add 15-20% perlite or sharp sand to containers. 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

Endura Scarlet Verbena sits happiest at around 30-55% humidity and 15-32°C (60-90°F). Prefers lower humidity; high atmospheric moisture promotes powdery mildew and botrytis in the dense flower clusters. Excellent natural air circulation when planted in full, open positions reduces fungal pressure significantly. If you keep the room above 15 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 endura scarlet verbena sparingly. Incorporate a slow-release balanced granular fertiliser at planting. Feed container plants every 10-14 days with a high-potassium liquid fertiliser to sustain the long blooming season. Over-feeding with nitrogen reduces flowering and increases disease susceptibility. 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 endura scarlet verbena in the Growli community. Each is annotated with the most common cause so you know where to start.

• Powdery mildew — The most common problem; choose mildew-resistant cultivars like Endura, improve air circulation, and treat early outbreaks with a potassium bicarbonate or sulphur-based spray.
• Spider mites — Fine bronzing and webbing on leaves in hot, dry conditions; increase humidity locally and treat with an insecticidal soap or neem oil spray.
• Root rot — Poor drainage or overwatering causes sudden wilting; ensure containers have unobstructed drainage holes and water only when the top few centimetres are dry.
• Aphids — Colonies on growing tips and buds; knock off with a strong water jet or apply insecticidal soap.
• Botrytis on spent flowers — Deadhead regularly to prevent dead flower material from becoming a focal point for grey mould in humid weather.

Companion plants

Endura Scarlet Verbena pairs well with Petunia, Calibrachoa, Lantana, and Scaevola. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Start from seed indoors 10-12 weeks before last frost at 20-24°C in darkness (seeds need dark for germination); expect 14-21 days. Chill seeds in the fridge for 24 hours before sowing to improve germination rates. Alternatively, take tip cuttings in late summer to propagate named cultivars. 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

Endura Scarlet Verbena is toxic to pets. The ASPCA lists Verbena species as toxic to dogs, cats, and horses; ingestion can cause vomiting, diarrhoea, depression, weakness, and possible liver or kidney damage in significant quantities. Keep animals away from plants and fallen blooms. 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.

Endura Scarlet Verbena deep-dive guides

Every aspect of endura scarlet verbena care, each with its own calibrated guide:

• Common endura scarlet verbena problems & fixes
• Endura Scarlet Verbena watering schedule
• Endura Scarlet Verbena light requirements
• Best soil mix for endura scarlet verbena
• Endura Scarlet Verbena fertilizing guide
• When to repot endura scarlet verbena
• How to propagate endura scarlet verbena
• How to prune endura scarlet verbena
• What's eating my endura scarlet verbena?
• Endura Scarlet Verbena growth rate & size
• Endura Scarlet Verbena cold hardiness
• Endura Scarlet Verbena temperature & humidity
• Is endura scarlet verbena toxic to cats & dogs?
• Is endura scarlet verbena toxic to cats?
• Is endura scarlet verbena toxic to dogs?
• All 9 Verbena varieties
• Getting endura scarlet verbena to bloom

Featured in these plant shortlists

Endura Scarlet Verbena qualifies for 5 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Endura Scarlet Verbena is also known as Garden Verbena, Scarlet Verbena, and Hybrid Verbena.

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