Clematis ‘Candida’ is an heirloom large-flowered white climbing vine with 6- to 9-inch blooms that flowers from late spring into early fall, making it a standout choice for trellises and garden walls.
One good look at a fully open Clematis ‘Candida’ in June explains why this 1862 introduction from breeder Victor Lemoine is still sold today. The flowers are massive — often spanning nine inches across — pure white with a center cluster of yellow stamens. It climbs 8 to 12 feet, blooms on both old and new wood (Group II pruning), and adapts to gardens from USDA Zone 4 through Zone 9. Below is everything needed to plant it, prune it, and keep the blooms coming.
What Does Clematis ‘Candida’ Look Like?
Each flower on a mature plant measures 6 to 9 inches wide, with broad overlapping petals in bright white and a central tuft of pale yellow anthers. The vine grows 8 to 12 feet tall and spreads about 2 to 3 feet wide, with semi-woody stems and mid-green leaves that hold up well through the season. The first flush appears in late spring or early June, with a second, lighter show often returning in early fall.
Is This the Same as Clematis Candida?
The search term “Clematis Candida” is a common misspelling of the correct name, Clematis ‘Candida’ (botanical name Clematis lanuginosa ‘Candida’). There is no plant called Clematis Candida — the single-quote form marks it as a named cultivar, not a species. The plant was developed by crossing C. lanuginosa with C. patens and introduced in 1862 by the French nurseryman Victor Lemoine.
Hardiness, Size, and Bloom Data at a Glance
| Attribute | Value |
|---|---|
| Botanical Name | Clematis lanuginosa ‘Candida’ |
| Mature Height | 8–12 feet |
| Mature Width | 2–3 feet |
| Flower Size | 6–9 inches |
| Bloom Period | Late spring through early fall |
| USDA Hardiness Zones | 4 through 9 |
| Light Needs | Vine in sun, roots in shade |
| Soil pH Preference | Neutral to slightly alkaline (~7.0) |
| Deer / Rabbit Resistant | Yes |
| Year Introduced | 1862 |
How To Plant Clematis ‘Candida’ — The Right Depth Matters
Set the crown 1 to 2 inches below the soil surface. This depth protects the crown from temperature swings and encourages strong shoot development. Choose a spot with well-drained, neutral to slightly alkaline soil (a pH around 7.0 is ideal). The vine should receive at least 3 hours of direct sun daily while the root zone stays shaded — a layer of mulch, low ground cover, or a nearby perennial works. Install the trellis, arbor, or fence at planting time so roots are not disturbed later.
Watering and Fertilizing Rules
Give the plant about 1 inch of water per week, watering deeply when the top inch of soil dries out. Avoid wetting the foliage to reduce the risk of powdery mildew.
For fertilizer, use a low-nitrogen mix. A 5-10-10 formula applied in spring when buds reach about 2 inches long works well. Alternate monthly applications of 5-10-10 with balanced 10-10-10 through spring and summer, but stop fertilizing once flowers open. Resume after the bloom cycle finishes.
Group II Pruning — The Only Schedule You Need
Clematis ‘Candida’ belongs to Pruning Group II, meaning it blooms on both old wood (last year’s stems) and new wood (this year’s growth). Incorrect pruning is the fastest way to lose a season of flowers. Follow this two-step yearly routine:
- Late winter or early February/March: Remove all dead and weak stems. Cut remaining stems back to the topmost pair of large, green buds. Leave the rest of the old wood intact.
- Right after the first major bloom flush: Cut each flowering stem back by about half. This tidies the plant and often coaxes a second bloom cycle in early fall.
In the first spring after planting, prune everything back to the lowest pair of healthy buds regardless of the group. This builds a strong framework the plant will rely on for years.
Common Problems and How To Handle Them
| Problem | Symptom | Solution |
|---|---|---|
| Powdery Mildew | White powdery coating on leaves | Remove infected foliage; apply a fungicide containing myclobutanil or propiconazole at first sign. Rotate with a contact fungicide to prevent resistance. |
| Aphids | Clusters of small insects on new growth | Spray insecticidal soap 3 times at 5- to 7-day intervals. An imidacloprid soil drench also works for persistent cases. |
| Clematis Wilt | Sudden stem collapse, blackened leaves | Cut affected stems to the base immediately and destroy. Sterilize pruners with bleach. The plant often recovers from the roots. |
| Poor Blooming | Few flowers or none | Over-pruning in spring removes the old wood that carries the first bloom. Prune Group II vines lightly. Also check for too much shade. |
Where To Buy Clematis ‘Candida’
The plant is widely available from online nurseries and garden centers. Sizes range from 4-inch grower pots to full-gallon containers. Notable suppliers include Plant Addicts, White Flower Farm, Brushwood Nursery, Monrovia, and Wekiwa Foliage. Prices vary by season and region, so check current listings before ordering. Because ‘Candida’ is a named cultivar, buying from a reputable grower ensures you receive the true variety with the correct flower size and color.
Container Growing and Small-Space Use
Clematis ‘Candida’ performs well in large containers on patios and balconies. Use a pot at least 18 inches deep with drainage holes, high-quality potting soil, and a built-in trellis or nearby rail. Containers dry out faster than in-ground beds, so monitor soil moisture every few days during hot weather. The 8- to 12-foot mature height works well on a compact obelisk or against a wall in a small garden.
References & Sources
- Clemson HGIC. “Clematis.” Official fact sheet covering planting depth, pruning groups, fertilization, and disease control.
- White Flower Farm. “Clematis ‘Candida’.” Retail listing with care notes and pruning schedule.
- Plant Addicts. “Candida Clematis.” Specifications including bloom size, hardiness zones, and light needs.
- Clematis International. “Clematis ‘Candida’ (Lemoine, 1862).” Historical record confirming the 1862 introduction by Victor Lemoine.