Verbena 'Lavender Spires'
- Position: full sun
- Soil: moderately fertile, moist but well-drained soil
- Rate of growth: average to fast-growing
- Flowering period: June to September
- Other features: the leaves may irritate skin allergies
- Hardiness: borderline hardy (may need winter protection)
On the top of the upright leafy stems, branching flowerspikes appear in early summer. These open gradually from their base forming rings of lavender flowers well into autumn. They are ideal for adding vertical interest to herbaceous borders and associate well with ornamental grasses. Bees and other beneficial pollinating insects will be very tempted by the flowers.
- Garden care: Protect plants in winter with a dry winter mulch around the crown.
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Q:Powdery mildew on my plants
Hi, I wonder if your plant doctor may be able to answer a query for me. I have bought a few Verbenas from yourselves and they all seem to have suffered the dreaded powder mildew problem. I have sprayed with a recommended product and discarded the affected leaves but don't know if I have sorted the problem or not sufficiently? I read that this often affects plants that are under stress, - I did keep all the plants potted up (although some in larger pots than at purchase) close to each other for some time. I wonder if that might be why this happened ? Any advice would be welcome. They are now all in the garden and hopefully will thrive. SueAsked on 9/3/2009 by Sue Hulkes
A:Hello Sue, Powdery Mildew is caused by the plants being too dry and having poor air circulation, which are usually made worse when the plants are growing in pots. It sounds as of you have tackled it correctly, so they should improve. For more information you can click on the following link. http://www.crocus.co.uk/pestsanddiseases/_//top12/Powdery%20mildew/ArticleID.1174 I hope this helps. Helen Plant DoctorAnswered on 9/4/2009 by Crocus Helpdesk
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