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Plant care

Fourth of July Rose (Fourth of July) care

Rosa 'Fourth of July'

Also called Fourth of July, WEKroalt.

RHS H6USDA 5-9Pet-safeIndoor Typically 3-4 m tall and 1.5-2 m wide (10-14 ft x 5-6 ft) when trained on a support.

Watering rhythm

Direct sun (at least 4-6 hours)

Deeply once or twice a week in the growing season, more during heat

Light

Direct sun (at least 4-6 hours)

Soil

Fertile, well-drained loam, pH 6.0-7.0

Humidity

40-70%

Temp

-23 to 32°C

Pet safety

Pet-safe

Mature size

Typically 3-4 m tall and 1.5-2 m wide (10-14 ft x 5-6 ft) when trained on a support.

Care at a glance

Light

Aim for at least 4-6 hours of direct sun on the leaves. Full sun, at least 6 hours daily, drives the strongest growth and most continuous flowering; the red-and-white striping is boldest in bright light. If your only bright window faces south, that's perfect for fourth of july rose — same window any aroid would fry on.

Watering

Watering fourth of july rose: deeply once or twice a week in the growing season, more during 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. Soak the root zone at the base; a large climber needs ample, deep watering to fuel its rapid growth. Keep new plants consistently moist while they establish their extensive root system.

Soil and pot

Fourth of July Rose grows best in fertile, well-drained loam, ph 6.0-7.0. Wants moisture-retentive but free-draining soil enriched with compost or aged manure. Improve poor or heavy ground with organic matter before planting at the base of a support. 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

Fourth of July Rose sits happiest at around 40-70% humidity and -23 to 32°C (-10 to 90°F). An outdoor climber indifferent to ambient humidity; train it on an open structure so air moves freely through the canes and reduces fungal leaf disease. 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 fourth of july rose sparingly. Feed a vigorous climber generously: balanced rose fertiliser in early spring and again after the first flush, with a spring mulch of well-rotted manure. Stop feeding by late summer so the long canes ripen before frost. 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 fourth of july rose in the Growli community. Each is annotated with the most common cause so you know where to start.

  • BlackspotSpotting and leaf loss on the lower canes in wet weather; clear fallen leaves, water at the base, and keep the trained framework open.
  • Poor flowering when over-prunedLike most climbers it blooms on the previous year's wood and on laterals; train canes horizontally and prune lightly rather than hard to maximise flowers.
  • AphidsClusters on the abundant new shoots; rinse off or treat with insecticidal soap early in the season.
  • Powdery mildewWhite coating on growth against still walls; site with airflow and keep roots evenly moist to limit it.

Propagation

Propagate by hardwood cuttings in autumn or semi-hardwood cuttings in summer; commercially budded onto rootstock. As a patented variety (WEKroalt), propagation for resale is restricted during the patent term. 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

Fourth of July Rose is pet-safe. ASPCA-listed as non-toxic to cats, dogs, and horses (Rosa species, family Rosaceae, no toxic principle identified). Thorny canes can cause physical injury, so keep low-trained growth away from pet runs. 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.

Fourth of July Rose care — frequently asked questions

What is the common name for Rosa 'Fourth of July'?

Rosa 'Fourth of July' is most commonly called Fourth of July Rose, but it is also known as Fourth of July, WEKroalt. The names refer to the same species, so care instructions for Fourth of July Rose apply identically to anything sold as Fourth of July.

How much light does fourth of july rose need?

Fourth of July Rose grows best in direct sun (at least 4-6 hours). Full sun, at least 6 hours daily, drives the strongest growth and most continuous flowering; the red-and-white striping is boldest in bright light.

How often should I water fourth of july rose?

Water fourth of july rose deeply once or twice a week in the growing season, more during heat. Soak the root zone at the base; a large climber needs ample, deep watering to fuel its rapid growth. Keep new plants consistently moist while they establish their extensive root system. 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 fourth of july rose toxic to cats and dogs?

Fourth of July Rose is pet-safe. ASPCA-listed as non-toxic to cats, dogs, and horses (Rosa species, family Rosaceae, no toxic principle identified). Thorny canes can cause physical injury, so keep low-trained growth away from pet runs.

What USDA hardiness zone does fourth of july rose grow in?

Fourth of July Rose is rated for USDA zone 5-9 and RHS hardiness H6. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Fourth of July Rose deep-dive guides

Every aspect of fourth of july rose care, each with its own calibrated guide:

Featured in these plant shortlists

Fourth of July Rose qualifies for 12 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Fourth of July Rose is also commonly called Fourth of July or WEKroalt.