How to Grow Allamanda blanchetii | Growing Purple Allamanda

Last Updated: 19.10.2023

If you love purple-pink flowers then we have an exotic one! Learn all about How to Grow Allamanda blanchetii and include it in your garden for a vivid display!

How to Grow Allamanda blanchetii
shutterstock/youyuenyong budsawongkod

Here’s a detailed guide on How to Grow Allamanda blanchetii that will help you to grow this flower easily all year round in India!

Learn How to Grow Night Flowering Jasmine Here

What is Allamanda blanchetii?

Allamanda is a tropical plant popular for its stunning blooms. The plant has a rapid growth rate and its trailing stems require some support to grow. It can grow as tall as 8-10-feet but you can prune it regularly to keep its size in check.

How to Propagate Allamanda blanchetii

Take a 5-7 inches long cutting from a healthy plant. Dip its end in a rooting hormone, and plant it in the garden or pot. Water the soil thoroughly and cover the cutting with a  polyethylene bag to create a humid environment. Make sure it gets plenty of bright and indirect light.

Learn How to Propagate Kamini Plant Here

Growing Requirements of Allamanda blanchetii


This plant does well in 5-6 hours of full sunlight on a daily basis. Avoid growing it in an area that’s shaded. For plenty of flowers, the more sun it is going to get, the better!


Water it deeply whenever topsoil feels dry to touch. Hold back watering rate during winters. Allamanda is quite sensitive to calcium-laden water, so consider using collected rainwater or make sure you keep the tap water overnight to let the elements settle down.


Use regular garden soil with ample organic matter. A peat-based potting soil is best for its growth.  Alternatively, you can mix equal parts of potting mix and perlite/ vermiculite, and use it as a growing media.


This tropical plant does best in the temperature range of 18-32 C. Although, it can tolerate a temperature as low as 10 C.

Learn 17 Ways to Get Rid of Lizards from Home and Garden Here

Care for Allamanda Blanchetti


Prune the plant on a regular basis to keep its invasive growth in check. Also, deadhead spent flowers to encourage more blooming. Make sure to prune the dead, diseased, and broken branches from time to time.


Feed the plant with water-soluble balanced fertilizer twice a year. Mulch the topsoil with organic matter like compost or cow dung manure.

Pests and Diseases

Allamanda is susceptible to mealybugs, spider mites, scales, and whiteflies. The most basic method to deter them away is using a strong jet of water. You can also use neem oil or soap solution once every two weeks.

Leave a Comment

Send this to a friend