Syringa vulgaris 'Souvenir de Louis Spaeth' is a lovely, large Lilac tree that can grow into a large bush that is 7 metres tall by 7 metres wide in 20 years. It produces a profusion of highly fragrant purple flowers that stand out well against the back-drop of mid-green, heart shaped foliage.
'Souvenir de Louis Spaeth' is a hardy deciduous tree that does well in full sun or partial shade. It prefers a well-drained soil with a neutral to alkaline acidity.
Click here to see all Lilac trees and bushes.
AKA Syringa vulgaris 'Andenken an Ludwig Späth', 'Souvenir de Louis Spaeth' lilac tree, Purple lilac tree
Our pot grown Souvenir de Louis Spaeth Lilac trees can be planted at any time of the year. Start by removing weeds and grass within a metre of your desired planting hole. Dig a square hole as deep as your root mass and approximately 2x as wide. To help the tree establish more effectively, sprinkle root grow in the hole.
Remove the pot, gently tease the roots and place into the planting hole. Mix 50% of the original soil with 50% compost, fill in the hole and firm around gently. Avoid banking the soil up around the collar of the tree. Whilst bush forms of Souvenir de Louis Spaeth do not require a stake and tie support, single stem tree forms do.
If you’re planting in spring or summer, water well for the first few months. Increase watering if there are extended periods of hot or dry weather. If planting in autumn, you may only need to water a little. Irrigation kits make it easier.
Once planted, keep the area free of competing weeds and grass for the first couple of growing seasons.
Pruning is encouraged when it comes to Souvenir de Louis Spaeth Lilac trees. If you wish to maintain a bush rather than a tree, allow the side growth to flourish and simply prune after flowering. For a tree effect, prune the longest, oldest branches that lie closest to the ground.
If your Souvenir de Louis Spaeth Lilac begins to look overcrowded, remove inner branches to allow more light and air inside the canopy. Always prune dead flowers and damaged or diseased branches.
Mature Lilac trees that have become overgrown can be hard pruned back to their former glory, but it will take time. Never prune a lilac tree back by more than a third of its size. Do this one season at a time, allowing the tree to recover in between. Apply a fertiliser each autumn and again in spring, just before flowering.
All trees are carefully packed by our experienced team and most are delivered within a week of placing the order (please allow up to 12 working days during busy periods). There's no need to be in to receive your order and you can request where it is left via the checkout.
There is a slightly longer timescale on pleached and mature trees (trees over 2.5m in height) because we group orders together for specialist delivery - we will contact these customers to notify them of the delivery date.
Trees on pre-order are still growing and an estimate of when they will be ready is given on the basket page. Orders will be despatched when all trees are ready.
Gift trees and those required by a specific date can be accommodated with pleasure, although we accept no legal responsibility for late deliveries.
Our nursery is a busy despatch centre, so please make an appointment to collect or view trees. For collections, despatch charges will be refunded.
1 small tree (most trees under 1.5 metres in height) : £7.95 + vat
1 medium tree (most trees 1.5-2 metres in height) or 2-4 small trees: £9.95 + vat
2+ medium trees or 5+ small trees: £12.95 + vat
1-4 trees delivered by pallet (inc. mature Japanese Maples): £19.95 + vat
Mature and pleached trees or orders too large for pallet: Cost is calculated in the checkout process and varies by postcode. It is a one off charge and will not increase if you add to the order.
The above prices exclude the Scottish Highlands, where delivery starts from £24.95 + vat and is calculated in the checkout process.
Our courier charges are not viable for just one or two trees, but if you have a larger requirement then please do speak to us to see if we can find a solution.
The product table at the bottom of the page gives the forms and sizes available for this variety. Please note, photos are a guideline as all plants are unique. Below are definitions of terms:
Supplied Size: Height measured from the top of the pot.
Single Stem / Pruned and shaped: Classic shaped tree with a single stem that has had pruning to help create a beautiful, natural shape.
Top grafted: A height noted next to this form refers to the length of clear stem, which will not grow taller. Only the head of branches will develop. Top grafted trees do not require complicated pruning and are ideal for small spaces.
Feathered: A feathered tree has branches from the bottom of the trunk all the way up. These branches can be removed if a clear stem is required.
Multi Stem: A multi stem tree has two or more stems arising from or near ground level, growing from one root system. Take care to buy a true multi-stem like all ours and not those that are 3 saplings in a pot to cheaply imitate them.
Bush: A plant with many stems low down, rather than one clear stem.
Clump: Several plants in one pot that can give the appearance of a multi stemmed and very bushy tree.
Climber: A plant that is a natural climber and will be delivered usually running up a bamboo cane, ready to position in the garden.
Standard Tree: A more mature tree with an upright clear stem of approximately 1.8m-2.0m (measured from the soil to the lowest branches of the crown). Standards are available in different forms relating to their girth size (circumference of the stem measured 1m above soil level), not height:
Standard either 6-10cm or 8-10cm girth, approximately 2.5-3.0m in height
Premium Standard 10-12cm girth, approximately 3.0-3.5m in height
Heavy Standard 12-14cm girth, approximately 3.5-4.5m in height
Extra Heavy Standard 14-16cm girth approximately 4.0-6m in height
|Plant Specification||Form||Supplied Size||Root type||Price||Quantity Qty|
|Bush||60-90cm||10L pot||£39.99 (ex VAT)|