Ahh another week returns and this plant of the week is surprisingly one of a group of plants that haven’t featured yet, so there’s no time like the present is there!
Cornus alba ‘Sibirica’ is as its name suggests is a form that came from Siberia. Cornus alba itself does have a wide range, growing from Siberia into Russia and China. These forms of C.alba also grow in thickets up to 3m tall while ‘Sibirica’ is slightly smaller growing up to 2.4m tall, which is some of the reasons it makes it a good plant for the smaller gardens. This form Ruby was selected from a batch of seedlings for having the most brightest red stems. Sibirica was first introduced into the uk though Westonbirt arboretum in around 1838.
Cornus alba ‘Sibirica Ruby’ is mainly grown for its bright red stems that give us so much delight during the winter months. If left unpruned, it will make a shrub up to just over 2.4m in height that produces while flowers in May and June which are followed by white flushed with purple fruits. The dark green leaves turn a stunning dark red colour before falling off to expose the red stems.
Growing wise, it prefers a nice damp soil but will grow away quite happily in alkaline or acidic soils. It prefers a sunny or semi shady spot in your garden. When planting, it is best to add plenty of organic material. It can be left to form a medium sized shrub but if you do this, you lose The intense redness of the stems. To get the best stem colour, you have to prune hard back down to 150mm each spring around the end of March, you can prune the whole plant like this or if you would like flowers, thin out half the plant as per above and leave half, next winter it is these 2yr old stems you cut down and leave the 1yr stems alone. After pruning, I tend to mulch with garden compost and feed with Vitax Q4. It doesn’t suffer from too many pests and diseases. Propagation wise, it is pretty easy to grow from either layering a stem onto the ground or from hardwood cuttings taken in early November and left in a cold frame until the spring
Best place to see it, is indeed RHS Wisley where it can be found near the big pond. Buying wise this form can be a bit tricky! Last in the plant finder in 2015!
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