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Plant care

Antirrhinum majus 'Twinny Peach' (Twinny Peach Snapdragon) care

Antirrhinum majus 'Twinny Peach'

Also called Twinny Peach Snapdragon, Double Peach Snapdragon.

RHS H3USDA 7-11Pet-safeIndoor Around 20-30 cm tall and 20-30 cm wide

Watering rhythm

4-7days

When the top 2-3 cm of soil is dry, roughly every 4-7 days

Light

Direct sun (at least 4-6 hours)

Soil

Fertile, well-drained, neutral to slightly alkaline soil or quality potting mix

Humidity

40-60%

Temp

10-26°C

Pet safety

Pet-safe

Mature size

Around 20-30 cm tall and 20-30 cm wide

Care at a glance

Light

Most houseplants will scorch where antirrhinum majus 'twinny peach' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun gives the densest, most floriferous mounds. It tolerates light shade, but flowering thins and plants stretch where light is insufficient. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for when the top 2-3 cm of soil is dry, roughly every 4-7 days for antirrhinum majus 'twinny peach', but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Keep evenly moist, watching containers closely as they dry faster. Water at the base to keep leaves dry; avoid both drought stress and waterlogging.

Soil and pot

Antirrhinum majus 'Twinny Peach' grows best in fertile, well-drained, neutral to slightly alkaline soil or quality potting mix. Thrives in compost-amended loam or a free-draining container mix at a pH near 6.2-7.0. Ensure sharp drainage to prevent the root and crown rots common to snapdragons. 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

Antirrhinum majus 'Twinny Peach' sits happiest at around 40-60% humidity and 10-26°C (50-79°F). Average outdoor humidity is ideal. Damp, stagnant conditions encourage rust and mildew, so favour airflow and spacing, especially in containers grouped tightly together. If you keep the room above 10 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 antirrhinum majus 'twinny peach' sparingly. Feed container plants every 2 weeks with a balanced liquid fertiliser; in beds, feed every 3-4 weeks or use slow-release granules at planting. Regular feeding sustains the heavy double-flower display through the season. 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 antirrhinum majus 'twinny peach' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • RustOrange pustules under the leaves spread in humidity. Space plants, keep foliage dry, remove infected leaves, and avoid replanting snapdragons in the same soil yearly.
  • Root or crown rot in potsOverwatered or poorly drained containers cause collapse. Use a free-draining mix, ensure drainage holes are clear, and let the surface dry between waterings.
  • Heat-induced flowering pauseBlooming slows in extreme heat despite good tolerance. Deadhead spent spikes and keep watering; flowering resumes as temperatures moderate.
  • Aphids on new growthSoft clusters on buds and tips. Rinse off with water or apply insecticidal soap, and avoid over-fertilising, which produces aphid-attracting soft growth.

Propagation

From seed. Sow indoors 8-10 weeks before the last frost; surface-sow and press in, as light triggers germination at around 18-21°C over 1-3 weeks. Pinch seedlings once to encourage the bushy habit, harden off, then plant out after frost has passed. 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

Antirrhinum majus 'Twinny Peach' is pet-safe. ASPCA-listed as non-toxic to cats, dogs, and horses (Antirrhinum majus is listed as 'Common Snapdragon' and 'Garden Snapdragon'). Large amounts may still cause mild, self-limiting gastrointestinal upset, and any chemical treatment on the plant is a separate risk to pets. 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.

Antirrhinum majus 'Twinny Peach' care — frequently asked questions

What is the common name for Antirrhinum majus 'Twinny Peach'?

Antirrhinum majus 'Twinny Peach' is most commonly called Antirrhinum majus 'Twinny Peach', but it is also known as Twinny Peach Snapdragon, Double Peach Snapdragon. The names refer to the same species, so care instructions for Antirrhinum majus 'Twinny Peach' apply identically to anything sold as Twinny Peach Snapdragon.

How much light does antirrhinum majus 'twinny peach' need?

Antirrhinum majus 'Twinny Peach' grows best in direct sun (at least 4-6 hours). Full sun gives the densest, most floriferous mounds. It tolerates light shade, but flowering thins and plants stretch where light is insufficient.

How often should I water antirrhinum majus 'twinny peach'?

Water antirrhinum majus 'twinny peach' when the top 2-3 cm of soil is dry, roughly every 4-7 days. Keep evenly moist, watching containers closely as they dry faster. Water at the base to keep leaves dry; avoid both drought stress and waterlogging. 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 antirrhinum majus 'twinny peach' toxic to cats and dogs?

Antirrhinum majus 'Twinny Peach' is pet-safe. ASPCA-listed as non-toxic to cats, dogs, and horses (Antirrhinum majus is listed as 'Common Snapdragon' and 'Garden Snapdragon'). Large amounts may still cause mild, self-limiting gastrointestinal upset, and any chemical treatment on the plant is a separate risk to pets.

What USDA hardiness zone does antirrhinum majus 'twinny peach' grow in?

Antirrhinum majus 'Twinny Peach' is rated for USDA zone 7-11 (perennial in mild zones; widely grown as a cool-season annual) and RHS hardiness H3. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Antirrhinum majus 'Twinny Peach' deep-dive guides

Every aspect of antirrhinum majus 'twinny peach' care, each with its own calibrated guide:

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Antirrhinum majus 'Twinny Peach' is also commonly called Twinny Peach Snapdragon or Double Peach Snapdragon.