Characteristic and Growing Guide for Magnolia Soulangeana

We introduce a new crop file in our Gardenprue database. Today we give way to a very peculiar tree, a hybrid species of the Magnoliaceae family . We love this family of plants so we are going to try to make a complete description of this specimen. Today, at Gardenprue, we grow  Magnolia soulangeana .

Let’s go to the common name, which is what many people are interested in identifying the tree. Its name is  Magnolia de Soulange  or  Tulip Magnolia. When in doubt (depending on the area where we are, variations may arise) we go to the scientific name, which never fails,  Magnolia × soulangeana .

As it carries the x in the name, we know that it is a cross between two species, a hybrid. In this case, we are talking about a cross between  M. denudata  and  M. lilifolia. It can grow up to 6 meters in height, although it usually does not reach that much.

What is striking about this magnolia tree is its flowering, very showy and whitish in color with a pinkish outer part.

Magnolia soulangeana . Photography: Kroton


It is necessary to ensure that it does not have full exposure to the sun, as burns may appear on the leaves and damage the flowering.

Especially in the first years, growing it together with other trees (respecting its planting framework, of course), makes it enjoy areas of partial shade during the day. Once it is a large specimen, it will adapt perfectly to full sun conditions.

As for temperatures, we are lucky that it supports low temperatures, even light frosts. Just in case, here are some tips to protect your crops when the cold weather hits.


Do not be too complicated to find the area of ​​Sun or shade, since when it grows and exceeds 3 meters in height, the glass will receive the corresponding solar radiation. It is best to prepare the soil with a good supply of decomposed organic matter as a bottom fertilizer. We must try to mix it well with the soil in our garden. With respect to pH, preferably acidic.

With this, apart from improving the level of organic matter in the soil (the correct thing is that it has values ​​equal to or greater than 2%), we manage to improve drainage, texture and porosity. When planting it, we will give it a generous start watering.


The water needs in  magnolia soulangeana  are high. This means that it would be advisable to keep the earth in constant temperature. You have to take the point so that there are no periods where the earth dries out or cracks. Of course mentioning that in summer you have to intensify the irrigation.

As for the fertilizer, the perfect thing would be to periodically add organic fertilizers such as compost, manure or green mulches that release minerals when they decompose. On average, you can make 2 subscribers of this type, one in spring and one in autumn.


For those gardeners who plant it from a very young age, remember that flowering takes a few years to appear. Of course, when it does, it provides a spectacular visual enhancement to the garden.

It can be multiplied by cuttings (a very comfortable and efficient way) that we will select in late spring or early summer. There are also other forms of reproduction such as layering or seed. However, the latter is very slow and achieves a late flowering of the tree. Growth is slow so through seed it is one of the longest forms of reproduction.

When buying a live specimen, take care that it is not excessively large since transplants are somewhat difficult.


Any plant that multiplies by seed has its charm. He gets excited looking forward to the exit of the first sheets and we accept it as a triumph.

We just created life (however philosophical it may be). However, for  magnolia soulangeana  we are going to be careful with the following:

  • Try not to keep the seed. When they are bought, plant them as soon as possible (according to their planting time).
  • You have to stratify them. Place the seed in a humid medium and keep it in the refrigerator (4-5 ºC) for 2 months. Periodic checks must be made, as they can germinate.
  • Sow in pots or containers with the seed buried between 1 and 2 cm.
  • The ideal temperature is between 18 and 24 ºC, in a bright environment.
  • Germination can last between 2 weeks or extend 1 month or more, depending on the stratification.
  • When transplanting to the garden, it is convenient for magnolia soulangeana to undergo an adaptation process, both to the Sun and to the temperature and humidity outside.

Leave a Reply

Your email address will not be published. Required fields are marked *