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Choose your climateBased on winter hardiness only.

Climber · Ranunculaceae family

Italian clematis

Clematis viticella

Full sun to part shade 9 ft 10⅛ in–14 ft 9⅛ in × 2 ft 11⅜ in–4 ft 11 in Flowers June–September to −84 °F
Flower colors Click a color

In short a 10-second read

SunFull sun to part shade
Size9 ft 10⅛ in–14 ft 9⅛ in
spacing 3 ft 3⅜ in
FlowersJune–September
PlantingApril–May, September–October
WinterNo winter protection

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in average soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

tolerates any pH
acidicneutralalkaline
averageloamysandyclay

Watering

keep the soil evenly moistless when it rains

Frost

−84 °F
no winter protectionleafless in winter

How much space it takes

Mature size.

The mature plant next to a person (69 in).

3 ft 3⅜ in6 ft 6¾ in9 ft 10⅛ in13 ft 1½ in9 ft 10⅛ in–14 ft 9⅛ inspread 2 ft 11⅜ in–4 ft 11 in
9 ft 10⅛ in–14 ft 9⅛ in× spread 2 ft 11⅜ in–4 ft 11 in

Plant 3 ft 3⅜ in apart.

Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Typical for a temperate climate (four seasons). The line shows the current month.

The year at a glance

Flowers: JanuaryFlowers: FebruaryFlowers: MarchFlowers: AprilFlowers: MayFlowers: JuneFlowers: JulyFlowers: AugustFlowers: SeptemberFlowers: OctoberFlowers: NovemberFlowers: DecemberPlanting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersPlanting
Now, in October: a good time for planting (container plant).
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

June–September · purple

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: April–May, September–October

What to plant now (October) full list in October (243) →

Feeding

Nutrition.

Light
compost or mulch

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

What you will see

Irregular holes in leaves and slime trails, especially on young plants in damp weather.

How to protect

  1. Prevention
    • Changing growing practices is the best strategy; protect young plants.
  2. By handEvening collection by torchlight in damp weather; barriers (copper tape, wool pellets).
  3. Biological moist, warm soilPhasmarhabditis hermaphrodita nematodes watered into the soil.
Slugs and snailspest

What you will see

Irregular holes in leaves and slime trails, especially on young plants in damp weather.

How to protect

  1. Prevention
    • Changing growing practices is the best strategy; protect young plants.
  2. By handEvening collection by torchlight in damp weather; barriers (copper tape, wool pellets).
  3. Biological moist, warm soilPhasmarhabditis hermaphrodita nematodes watered into the soil.
More about this problem

What you will see

Clusters of tiny sap-sucking insects on young shoots, curled leaves, sticky honeydew and sooty mold.

When to look

Spring – summer

How to protect

  1. Prevention
    • Aphids are part of a healthy garden and food for predators; a healthy plant usually tolerates them.
  2. By handWipe or rinse off colonies and remove affected tips.
  3. BiologicalEncourage natural enemies (ladybirds, earwigs, birds).
Aphidspest · spring – summer

What you will see

Clusters of tiny sap-sucking insects on young shoots, curled leaves, sticky honeydew and sooty mold.

When to look

Spring – summer

How to protect

  1. Prevention
    • Aphids are part of a healthy garden and food for predators; a healthy plant usually tolerates them.
  2. By handWipe or rinse off colonies and remove affected tips.
  3. BiologicalEncourage natural enemies (ladybirds, earwigs, birds).
More about this problem

Clematis wilt

Calophoma clematidina
disease

What you will see

Rapid wilting and death of shoots; the stem turns black inside.

How to protect

  1. Prevention
    • Deep soil preparation and mulch reduce root stress; disinfect secateurs. C. viticella is tolerant, not resistant.
  2. By handCut wilting stems back to healthy tissue and destroy them; new shoots often regrow from ground level.
  3. Chemical — only when nothing else helpsNo products exist for this disease.
Clematis wiltdisease

What you will see

Rapid wilting and death of shoots; the stem turns black inside.

How to protect

  1. Prevention
    • Deep soil preparation and mulch reduce root stress; disinfect secateurs. C. viticella is tolerant, not resistant.
  2. By handCut wilting stems back to healthy tissue and destroy them; new shoots often regrow from ground level.
  3. Chemical — only when nothing else helpsNo products exist for this disease.

Clematis slime flux

disease

What you will see

Wilting with a foul-smelling slimy ooze from a damaged stem.

When to look

Spring

How to protect

  1. Prevention
    • Protect from wind and frost; work carefully around the roots.
  2. By handCut out the stem below the slime; the plant often regrows.
  3. Chemical — only when nothing else helpsNo products exist.
Clematis slime fluxdisease · spring

What you will see

Wilting with a foul-smelling slimy ooze from a damaged stem.

When to look

Spring

How to protect

  1. Prevention
    • Protect from wind and frost; work carefully around the roots.
  2. By handCut out the stem below the slime; the plant often regrows.
  3. Chemical — only when nothing else helpsNo products exist.
Sources (5)

Frequently asked

Quick answers.

When does Italian clematis flower?

In June–September; the flowers are purple.

Does Italian clematis tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does Italian clematis need?

At maturity 2 ft 11⅜ in–4 ft 11 in wide and 9 ft 10⅛ in–14 ft 9⅛ in tall; recommended spacing 3 ft 3⅜ in.

Slugs and snails — what can you do?

Changing growing practices is the best strategy; protect young plants. Evening collection by torchlight in damp weather; barriers (copper tape, wool pellets).

Aphids — what can you do?

Aphids are part of a healthy garden and food for predators; a healthy plant usually tolerates them. Wipe or rinse off colonies and remove affected tips.

Sources (16) Checked 20 October 2026

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