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Clematis Jackmanii Hybrid 'Monte Cassino'

This product is currently out of season and unavailable.

Clematis Jackmanii Hybrid 'Monte Cassino'

Clematis ‘Monte Cassino’ is packed with deep purple to magenta flowers from summer to autumn. The blooms are quite big, measuring 15-20cm across and are punctuated with creamy white stamens at the centre.

The vigorous, fast growing stems stretch up to 3m tall and can be grown on an arbour, trellis, fence line, tree or shrub. Benefits from a light prune in spring, after the first flush of flowers. Pruning group 3, then cut to the ground late winter/early spring to allow the new growth to shine.

Jackmanii Clematis hybrids are gorgeous, large flowering Clematis. Their strong, vining tendrils are covered in flowers that look like brilliant jewels strung up in your garden. These blooms last for many weeks and even repeat across spring and autumn. Handsome, fluffy seed heads follow the blooms adding to the impressive show.

Clematis are perfect to soften harsh edges in the garden such as posts, pergolas fences and walls or even trees.

Clematis generally grow well where Roses flourish. They are also excellent in combination. You can use similar colours for a lovely blend or create some drama with contrasting shades. In fact, Clematis intermingle well with many plants – trees and shrubs especially as they use them for climbing up in a beautiful symbiosis. They are so versatile; you can even grow them in pots.

Jackmanii Clematis are deciduous climbers in pruning groups 2 or 3. They require a trellis/twine/wire or similar with something under a centimetre, that is thin enough to wrap their tendrils around.

The old adage is to plant your clematis so their 'head' is in the sun and their 'feet' are in the shade. In other words they like their root zone to be cool and protected, and the stem to grow up into a sunny position. You can protect the root zone with mulch and/or by using other plants to shield them from the sun.

Grow Clematis in humus rich, moist, well drained soil. They need good drainage or the roots can rot. Plant so they will receive around six hours sun a day and are shielded from the hot afternoon rays. To perform at their best they should be fertilised well, to do this you can use a Rose Fertiliser every three months or so. Clematis get better and better as they establish, they have a large root system that takes time to establish. So while the first season might be a bit ho hum, prepare to be amazed in the next.

This product is currently out of season and unavailable.

Attributes

Product Code

CLJMT

Genus

Clematis

Species

X jackmanii

Botanical Name

Clematis x-jackmanii

Height

200-300cm

Width

100cm

Flower Timing

Summer to Autumn

Seasonality

Winter catalogue

Climate

Cool to Mediterranean

Availability - Quarantine

Australian Capital Territory, New South Wales, Northern Territory, Queensland, South Australia, Victoria, Western Australia

Pot size

10cm

Frost hardiness

Fully Hardy

Aspect

Full Sun to Semi Shade

Water needs

2

Supplied as

Pots

Growing Guide

Clematis

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Guaranteed Delivery

We start despatching from 17th August 2026. We post Australia wide via Australia Post. Please allow 10-15 business days for delivery. Deliveries to WA and Tasmania may take a little longer due to quarantine requirements. We do not ship outside of Australia. On-site click and collect is available for local customers.