Bignone: planting, cultivation, maintenance and flowering

A Bignone (Campsis) is a magnificent sarmentous shrub from the family of Bignoniaceae. It is called among others Jasmine of Virginia, Trumpet of Jericho or Trumpet of Virginia. This plant whose climbing lianas grow from 80 to 100 cm per year brings an ornamental note spectacular in the garden thanks to its large trumpet-shaped flowers, grouped in sumptuous bouquets and which bloom, depending on the variety, from May to October. Here’s everything you need to know to grow a Bignone in the ground or in a pot, knowing that it is very easy to live with and ultra resistant, enough to satisfy all gardeners, even the less experienced.

Plant a Bignone

Ideally, it is early fall that it is recommended to plant a Bignone. However, you can opt for planting at other times of the year, provided that the following points are respected:

  • In spring preferably if the risk of frost is removed because the Trumpet of Jericho is really hardy only once well rooted. In addition, in the mildest climates, it is necessary to plan very regular waterings during the first weeks after planting if the rains are infrequent.
  • In summer, only outside the scorching periods, and at this time the plant must benefit from very regular copious watering to take root well and not suffer from drought.

This climbing plant is used to quickly dress a pergola, a Wall or one wire mesh, preferably exposed to the South. If you want to plant several feet, they must be spaced from each other by about 3.50 m.

here’s how plant a Bignone in the ground.

  • Dig a wide and deep hole,
  • With part of the earth extracted, form a mound at the bottom of the hole,
  • Deposit a drainage layer such as gravel,
  • Install the Bignone foot in the center of the planting hole making sure that the collar is flush with the ground level because it must not be buried,
  • Mix the garden soil with planting soil and possibly a shovelful of sand if it is clayey,
  • Recap the hole,
  • Tamp,
  • Water.

It is recommended to place a mulch at the foot of the Bignone as soon as it is planted. This helps keep the soil cool, which is especially important for bignones planted in summer.

Can also grow a Bignone in a pot, in a substrate made up of garden soil, not too fine sand, potting soil and ripe compost. In the absence of compost, dead leaves are ideal for enriching the substrate with nutrients. Obviously, we choose a pot or a bin fully drilled, of sufficient size.

Growing a Bignone

This ornamental climbing plant needs to be installed under the sun to bloom. It is recommended that you reserve a place sheltered from the icy wind. She needs a fresh soil corn well drained and fertile. Undemanding, it tolerates calcareous soils but prefers a clayey soil, therefore heavy, to be lightened with sand of medium grain size.

In autumn and spring, it is better to avoid planting a Bignone when it is freezing. Once it is well established, this plant is hardy since in dry soil, sheltered from cold winds, it is able to withstand down to -12 ° C, or even -15 ° C. However, beware of temperature differences between day and night which promote the fall of flower buds. Although rustic, Bignone is therefore vulnerable to cold drafts, which are quite common in some of our regions.

Maintain the Bignone

Maintenance does not present any major difficulty since this spectacular plant has few requirements and is particularly resistant.


During the entire period following the planting of a Bignone, watering must be regular to ensure the recovery of the plant especially in summer because the earth dries quickly. Itou for Bignone in a pot which needs water, its substrate must not dry out. Remember that in the ground as in tub, these plants need to have the feet in the cool and the head in the sun.

In periods of very hot weather, it is advisable to water the bignones in the evening, moderately but very frequently.


An application of fertilizer is essential each spring.


A Bignone in a container must be repotted every 2 or 3 years. This allows you to install this beautiful climber in a larger container and completely renew its substrate.


It is recommended to place the Bignone in a pot in the shelter from the first frosts because its roots are more exposed to the cold than if it were grown in the ground. You can place it under an awning or in a frost-free, ventilated and bright room and take it out in the spring.

Parasites and diseases

Bignone is not very sensitive to parasites. At most, it can sometimes be the target of red spiders if it is very hot and dry or even aphids and more rarely mealybugs. But these attacks remain very moderate and are never devastating.

La Bignone is also appreciated for its high resistance to disease, a very appreciable asset.

Flowering of Bignone

The flowers of this sarmentose shrub illuminate the garden or the terrace with their beautiful colors: yellow, red, orange, salmon … Some are plain, others two-colored, depending on the variety.

To enjoy a very fast flowering after the spring planting of Bignone, you can choose a grafted subject. All the varieties are interesting because they bloom in a spectacular way, with however a first place on the podium for Campsis radicans. If one wishes to emphasize the diameter of the flowers, one can turn to Campsis grandiflora. Anyway, sun, light and freshness of the ground… here is the best cocktail to see a Bignone bloom with generosity.

But it is also necessary to prune the Bignone at the very beginning of spring to stimulate the production of new branches, the shrub flowering on the shoots of the year. In addition, a Jasmine of Virginia can quickly become invasive given its speed of growth. Pruning is therefore considered essential by many gardeners who wish to control such vigorous lianas which can reach 10 meters in adulthood. These hang alone on their support. No need to tie them up, you just have to guide them.