Jackman's Clematis Clematis 'Jackmanii' (LL)

Water

Jackmanii Clematis should be watered regularly to keep the soil moist but not waterlogged. During its growing season, in spring and summer, aim to give it about 1 gallon of water once a week, adjusting as necessary during particularly hot or dry periods. Make sure to water the plant at the base to avoid wetting the foliage, which can lead to disease. Reduce watering in the fall and water sparingly during winter when the plant is dormant. It's crucial not to let the soil dry out completely, even in winter.

Light

Jackmanii Clematis thrives best in a spot where it can receive around 6 hours of sunlight per day. It should be planted in a location that offers morning sun and afternoon shade to protect it from the intense heat of the day. The perfect spot is one that allows the vine's roots to stay cool and shaded while its foliage and flowers bask in the sun.

Temperature

Jackmanii Clematis prefers temperate climate conditions and can survive in temperatures as low as 20°F and as high as 85°F. The ideal temperature range for this clematis is between 55°F and 75°F, which encourages healthy growth and flowering. It's important to provide some winter protection if temperatures in your area drop below the minimum range.

Pruning

Pruning Jackmanii Clematis helps to encourage strong growth and healthy blooms. It should be pruned in late winter or early spring before new growth begins. As a group 3 clematis, Jackmanii should be cut back to about 12 to 18 inches above the ground, just above a set of strong buds, every year. This hard pruning encourages the plant to produce a flush of new, vigorous growth in spring and a wealth of flowers throughout the summer.

Cleaning

As needed

Soil

Jackmanii Clematis requires well-draining soil with a pH range of 6.5 to 7.5. Incorporate compost or well-rotted manure into the soil to enhance fertility and structure. A combination of loam, coarse sand, and peat is recommended for the optimal soil mix to maintain adequate moisture while providing good drainage.

Repotting

Jackmanii Clematis, being a perennial vine, does not typically require repotting as it is usually planted directly in the ground. However, if grown in a container, it may need repotting every 2-3 years or when it outgrows its current pot to ensure enough space for root growth.

Humidity & Misting

Jackmanii Clematis prefers average garden humidity levels and does not require any special humidity conditions. It is adaptable to outdoor humidity but should be shielded from excessively dry winds which can damage the foliage.

Suitable locations

• Indoor

  Provide bright light, cool room, climb support.

• Outdoor

  Full sun to part shade; support for climbing; moist soil.

• Hardiness zone

  4-9 USDA.

Life cycle

Clematis 'Jackmanii', commonly known as Jackman's Clematis, begins its life as a seed, which upon successful germination, develops into a small seedling with just a few leaves. As the plant matures, it enters a rapid vegetative growth phase, during which it develops its distinctive climbing vines and leaf structures, using nearby structures or plants for support. Following vegetative growth, Jackman's Clematis initiates the flowering stage in late spring or early summer, showcasing large, vibrant purple flowers that are especially prolific. After pollination, which is mainly carried out by insects, the flowers develop into feathery seed heads containing seeds that disperse to propagate the next generation. The plant then enters a period of dormancy in the winter, with the above-ground vine portions often dying back, but with the root system remaining viable to regrow in the following spring. Throughout its life, Clematis 'Jackmanii' may undergo pruning, typically in late winter or early spring, to remove dead or weak stems and promote vigorous growth and bountiful flowering.

Propogation

• Propogation time

  Spring-Early Summer

• The most popular method for propagating the Jackman's Clematis involves taking semi-hardwood cuttings during midsummer when the vine's new growth has started to mature and harden slightly. Cut a piece of the stem about 4 to 6 inches (10 to 15 cm) long, below a leaf node, with a sharp, clean tool to avoid crushing the stem. Strip the lower leaves off and dip the cutting's base in rooting hormone powder to encourage root growth. Then, plant the cutting in a well-draining potting mix, making sure at least one node is below the soil surface. The pot should be kept in a warm location with indirect light and covered with a plastic bag to maintain humidity. Roots typically develop within a few weeks, after which the new plant can be gradually acclimatized to less humid conditions and eventually planted outdoors once established and after the threat of frost has passed.