Magnolia Magnolia Susan

Description & features

Select plant type

Size and quantity

Photo
Size / Height
Price
Quantity
 
30L pot size / 1.25-1.50m
£144.00
130L pot size / 1.50- 1.75m
£412.00

All prices include VAT

All prices include VAT

All prices include VAT

All prices include VAT

Product description

 MAGNOLIA SUSAN – Magnolia

Characteristics

Susan is probably the best known of ‘‘The Girl Magnolias” which are selections resulting from controlled pollinations of Magnolia liliiflora 'Nigra' with Magnolia stellata 'Rosea'.  The crosses were made at the U.S. National Arboretum in 1955 and 1956 by William F. Kosar and Dr. Francis de Vos.

Susan has abundant deep pink-purple flowers which are produced in April-June and its erect habit makes this clone a lovely addition for a small garden. Though often thought of as a shrub in good conditions it should make a tree of 6m (20ft).  These magnolia selections bloom two to four weeks later than Magnolia stellata and Magnolia x soulangiana, reducing the possibility of late spring frost damage.

Where to grow

Magnolias need moist soils with a high organic matter content. They do not like drying out. It is often thought that Magnolias will not tolerate alkaline soils however many of the common varieties will do well except on chalky soils.

As the flowers are frost sensitive they are best kept out of frost pockets and windy exposed spots.

Did you know?

“The Girls” produce flowers with a variety of colours from reddish-purple to pink on white. The unexpected sporadic summer bloom adds landscape interest. 
They grow best in full sun to light shade, prefer loam soil with adequate moisture though will tolerate poorly drained, heavy clay soils or dry areas.
The other Girls are Ann, Betty, Judy, Randy, Ricki, Jane and Pinkie. 

 

Features

Mature height
Small - 5-10 metres
Spread
0-5 metres
Shape / habit
Shrub Multi-Stem
Growth rate
Slow
Soil type
All soil types
Sun levels
Full sun
Difficulty / hard to grow
Medium
Evergreen / Deciduous
Deciduous
Leaf
Green
Foliage
Dense
Flower colour
Pink
Purple
Flowering month
May
Uses
Garden Tree
Small garden Tree

Features

Mature height
Small - 5-10 metres
Spread
0-5 metres
Shape / habit
Shrub Multi-Stem
Growth rate
Slow
Soil type
All soil types
Sun levels
Full sun
Difficulty / hard to grow
Medium
Evergreen / Deciduous
Deciduous
Leaf
Green
Foliage
Dense
Flower colour
Pink
Purple
Flowering month
May
Uses
Garden Tree
Small garden Tree

Aftercare

For the continued healthy growth of your trees, shrubs or hedging it is vital that you follow the advice below.

Watering

The main reason that plants die within 12 months of having been planted is lack of water.  It is essential throughout the spring and summer, to give a heavy enough watering to enable the water to penetrate right down to the deepest root level of the tree.  In hot dry spells give the equivalent of 2 bucketfuls every three days.

Weed Control

One of the most common causes of lack of water is competition from grass.  When trees are first establishing, the grass roots would be at the same level as the tree roots and are far more efficient at taking up water and thus choke the tree.  It is vital for 3 years after planting that your tree or hedge has a circle or strip one  metre wide completely free of grass.  The way to eliminate grass in order of effectiveness is:

  1. Spray off the grass with a glyphosate based weed killer such as Roundup.  Apply each year for the first 3 years.  It is best applied when the tree is dormant as it is absorbed through green leaves and kills the plant off at the roots.
  2. Firmly fit a mulch mat around the base of the tree by tucking the edges into the soil and put a thick layer of bark mulch on top of this.  This can be done after the initial spraying with glyphosate and should avoid the need for further spraying.

Mowing or strimming is NOT an answer to the problem.  Each time you mow, the grass will grow back more vigorously and strimming invariably leads to lacerated trunks.

Staking

If trees are not correctly secured they will rock in the planting pit. Roots not firmly in contact with the soil are unable to take up moisture and nutrients, resulting in die back or death of the tree.  Check, particularly after windy weather, that stakes are still solidly in the ground keeping the base of the trunk firm.  The purpose of the stakes is to anchor the roots.   Flexing in the wind, higher up the trunk, is not necessarily a problem if the roots are firm.

Bellow is list of the correct system to use to secure your trees.

  • 40/60, 60/80, 80/100 whips - Unless rabbit/deer problem no need to stake.
  • 100/125, 125/150  1.2m Cane and Easi tie.
  • 150/175  1.2m square stake and a buckle tie and spacer.
  • 175/250, 6/8, 8/10 15L 1.65 Tree stake and a buckle tie and spacer.
  • All larger trees. 2 x 1.65 Tree stake and cross rail with 38mm cushion spacer and 1m of 38mm strapping.

Ties

Always use our recommended tree ties or strapping.  These are designed and manufactured with the correct amount of give to hold the tree firm without strangling it. They should be checked at the end of each growing season for adjustment as the trunk thickens.  Non proprietary materials such as baler twine will cut into the bark and should not be used.

Protection from Animal Damage

Rabbits, deer, sheep, cattle and horses can all potentially damage trees.  Ask us for advice on the most appropriate guards for your trees or hedge.  Squirrels are also a terrible pest when trees get to about 20ft tall but there is no protection available.


Comments

By Peter Dowsing on 23/02/2015

Can this Magnolia be grown satisfactorily in a container?

By Simon on 02/03/2015

Hello Peter,

I would say that Susan would be one of the better Magnolias to grow in a pot. Over time it might need to go in the ground but with a bit of careful looking after could be kept in a pot for a good number of years.

By Beverley on 22/04/2015

I have a small magnolia Susan, I bought it last year. Do you know how long it will be till it flowers? How big does it have to be to flower?

By Simon on 01/05/2015

Hello Beverley,

Magnolia Susan flowers from a very young age, ours here at the nursery flower from 2-3 years old.

Kind regards,

Simon

By Tony on 24/07/2015

Hello I have a magnolia Susan that I bought late March this year 2015, it flowered between April/May but recently It’s leaves have became limp is this what happens to these plants, it’s in a pot container,this is my first magnolia Susan. Kind regards tony 24/7/15

By Simon on 05/08/2015

Dear Tony,

Trees and shrubs in containers are very susceptible to drying out and limp leaves could be a sign that the magnolia needs more water. They also need feeding as they will use up the nutrients in a pot quite quickly.

By Malcolm on 13/08/2016

Hi
I have a magnolia Susan that is very well established in my garden,  it’s about 8 feet tall. It had a lovely showing of flowers for about 3 months in the spring.
However, I have just noticed today (13th August)  that it has another 5 flowers forming, is this normal.  BTW I am on the east coast in Essex.

By Simon on 19/08/2016

Hello Malcolm,

It is not unheard of for spring flowering trees to put on a second flush under the right conditions. Our unpredictable summer weather has obviously confused your Magnolia. Enjoy the bonus blooms!

By Justin on 19/08/2016

I would like to know if Susan magnolias are evergreen? thanks

By Simon on 23/08/2016

Hello Justin,

Susam magnolia loses its leaves in winter, it is deciduous.

By Debra Booth on 29/08/2016

Hi, can I prune back hard my magnolia Susan . Will it grow back?
Thanks Debra

By Simon on 31/08/2016

Hello Debra,

So as not to weaken the tree, you should stage any hard pruning over a few years. The best time to carry this out is mid-summer or early autumn to avoid bleeding from the cuts.

By june woodland on 13/09/2016

hi there I have a susan magnolia tree but would like to know how for the root grows, and as have a nigra magnolia tree would like to know how for the root grows.

By Simon on 14/09/2016

Hello June,

As a rule of thumb, tree roots spread out as far as the tree is tall, when grown in open ground. There are many factors involved in how the tree roots actually grow, though, making it difficult to say exactly how far they spread.

By Nikki Moo Hamilton on 07/11/2016

Hi, I have a Magnolia Susan in a pot.  She has been in it for a few years now and is very healthy, she is about 7ft tall and is currently in a ceramic pot.  I have bought her a huge new pot and have googled when and how to best move her but there seems to be some contradicting answers, some say during the fall and some say after flowering (which would not be until June).  Please could someone tell me the best time to move her, I know what soil she needs etc and any other instructions that maybe useful as I would hate to lose her.  Thank you

By Simon on 09/11/2016

Hello Nikki,

You can transplant as soon as the tree needs it, but late winter-spring is a good time, just as the plant is coming into active growth.

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