Blue tumbergia, fast growing climbing plant

Blue Tumbergia  also known as Thunbergia grandiflora, Climbing Tumbergia, Blue Trumpet Creeper, Clock Vine, Citrine or Blue Bignonia. Plant that belongs to the Acantáceas family, which is made up of about 150 species from the tropical areas of Africa and Asia. But this species is native to India.

The name Thunbergia is a tribute to the Swede Carl Peter Thunbergiar, a Swedish botanist student of Linnaeus who collected plants in Japan and Africa.

Characteristics of the blue Tumbergia

Perennial climbing  plant with flexible stems that can reach an area of ​​about 8 m. The leaves are opposite, lanceolate or oval in shape, rough, with an acuminate apex, green with serrated edges and three main veins. The flowers appear in clusters, with large trumpeted corollas, of a blue color that can vary from light blue to dark purple and blooms for several months (from summer to autumn).

Blue Tumbergia care

The blue Tumbergia is a vigorous, fast-growing plant that requires exposure to full sun or semi-shade, since frost can severely affect it.

As for the soil, it must be fertile and well drained. This requires mulch, sand and a little manure. You can even use a mixture of bone meal, sand, and plant leaves. When transplanting, it is necessary to water immediately and repeat the operation the following days. I know if several specimens were to be planted, there would have to be a 60 cm separation between each plant. It is a species that requires help to climb, especially when it is young.

Watering should be regular, but minimizing in winter. The subscription will be from spring and summer. It would only be necessary to dilute it in the irrigation water and pour it every two weeks, reducing the dose as specified by the manufacturer. At other times of the year it must be suspended. The compost should contain phosphorus, nitrogen and potassium. As well as other elements such as iron, magnesium, copper, zinc, molybdenum, boron and manganese, always in the correct dose to have a balance in the development of the plant.

It is sensitive to frost, tolerating a minimum of 0˚C, and requires protection from dry and summer winds. The young plants should be pointed to favor their branching and, thus, have a more compact plant. Adult plants can be pruned to minimize overgrown or cluttered branches.

The pests that could make this species susceptible are aphids, spider mites or spider mites. So you have to pay attention if they are detected, as they could cause considerable damage.

It is propagated by means of young or semi-mature wood cuttings obtained in the summer, or by seeds in the spring.


Being a vine, it is usually used to cover gazebos, outdoor gazebos, wire fences or inert material, and pergolas. Although it is also excellent for fences and walls. Combining the blue and white Tumbergia  will be excellent aesthetically. In the same way, it can be combined with plants that have the same needs.

The blue Tumbergia  is a plant that helps attract garden fauna such as bees and butterflies.

So there is no doubt that this species is very interesting, both for its size and the color of the flowers. Not to mention that it requires low maintenance so it always looks beautiful. Do you like it? Did you know about it?

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