The mid blue hyacinth shaped flowers are borne in clusters and have a gorgeous perfume. This clump-forming clematis has erect woody stems and requires free draining soil.
These fabulous, yet unusual clematis are classed as herbaceous sub-shrubs as their growth is so very different from the rest of the genus Clematis. 'Cassandra', 'Wyevale' and stans, have erect woody stems and produce clusters of hyacinth shaped flowers. 'Praecox' produces star-like flowers with recurved tips and woody scrambling stems. These make excellent plants for the border, they are easy to grow and bloom over a long period. This group of plants flower and perform better in sunny free draining conditions.
Leave pruning until mid-spring(April) when the weather has improved. Do NOT prune these hard in autumn or winter when tidying other herbaceous plants as the Heracleifolia Group over-winter better with the old growth left intact. Avoid them becoming too excessively wet during their first autumn and winter in the ground or perhaps plant in the spring.
Delivery from £7.99 and most customers never pay over £9.99!
We offer a year-round Mail Order and Delivery service (subject to weather and availability). We do not dispatch small or young plants, but send our mature plants in 3 litre pots anywhere in the United Kingdom and Europe.
We dispatch Monday to Thursday each week so usually your order will be dispatched within 1-2 days of ordering, however during busy periods this can be expected to increase. Any significant delays will be notified by email and posted on the website.
Orders made after midday Thursday are usually dispatched on the following Monday.
We use DHL for all our deliveries. To get the most out of the delivery service download the DHL App. Find out more here - DHL APP.
Our last dispatch before Christmas 2022 will be 15th December - all orders placed after this will be sent in the New Year and that is to be from the 9th January onwards.
Instructions to Nursery - At the checkout stage you are able to add an instruction to the nursery such as, 'Please avoid March 20th - 25th' or 'Away in June'.
Instructions to courier - Please give us details of a safe place where the parcel can be left (Please note - this is at the customer's risk). If no instructions to leave the parcel are given and there is no one to sign for it, then our carrier will try to deliver the following day.
Please provide your mobile number or email address and our carrier will tell you the hour your delivery will be made within and if it is not convenient you will be able to re-arrange the delivery directly with them.
UK Delivery Charges
Number of Plants
Standard postal area
Any not listed below
Isle of Wight
(2 Day Service)
Isle of Man
(2 Day Service)
AB 31-38 & 40-56
PA 20-38; 41-49 & 60-78
PH 4-44 & 49-50
ZE; IM; GY; JE
Export to Northern Ireland and outside the UK
We no longer offer to export to Northern Ireland or outside the United Kingdom and are sorry for any disappointment this has caused.
Click & Collect
Although we do not open on a regular basis, we are delighted to offer a Click & Collect option for you to collect your orders from our Rails End Nursery location in Worcestershire.
While we get to grips with this new offering we will have to restrict the collection day to a Friday only between 10:00 & 3PM with the hope of expanding that at a later date if we feel it is possible.
Make your online order, checkout and pay online just as if it was a delivery order but of course select Click & Collect instead of a shipping method.
Because we are predominantly a mail order business, our systems are automated and much of the terminology revolves around the kinds of terms used in mail order, so please forgive us for this.
You will receive the following automated emails after making your order.
1. Order acknowledgement. - Full details of your order.
2. Order Status Update - Pending - meaning your order is received into our order processing system
3. Order Status Update - Processing - meaning we are picking and cleaning your plants
4. Order Status Update - Dispatched - in the case of Collection orders, your plants are almost ready for you to pick up.
5. Order Status Update - Completed - your plants are ready for you to pick up on the next Friday.
You can collect from our new location at:
Rails End Nursery
At Thorncroft the quality of our clematis plants is very important to us and we will not compromise on keeping up the high standards our customers have come to expect.
We supply plants mostly in a 3 litre container, growing on a 3 foot (1 meter) bamboo cane support, occasionally a 2 litre pot is sufficient to ensure a quality plant is produced. Your clematis can not always be delivered in full flower, however we will aim to send you the most advanced plant for you so that you get the best display possible in the first year of our plants being in your garden.
Chelsea Chop - Also from time to time we will need to prune plants back to keep them tidy on their cane. While every effort is made to only supply plants in full leaf we may on occasions send plants that have been recently pruned or had leaves removed and will include notes to explain why this has been done. It's known as the 'Chelsea Chop' and is commonly seen in late May and June.
Please keep in mind that some of the more specialist clematis have different habits, so these standards can vary depending on the type you are buying but it gives you a good guide on what to expect.
From the very outset, the Thorncroft philosophy is to provide a clematis which will thrive for the customer in their garden but also to provide the expert knowledge that we have gained over the years to help advise you which clematis are the best.
We have been sending plants by mail order to customers all over the world and have build up a good knowledge of which plants perform best in various parts of the globe. We also value your experience and if would like to tell us about which clematis you grow in your country, please do, it will allow us to continue learning