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Search Results for "Verbena rigida"

Growing and sowing tips

Tip from CD

In forum: Verbena rigida

http://www.telegraph.co.uk/gardening/howtogrow/3348813/How-to-grow-Verbena-rigida.html has a sowing and growing guide.

These are the Thompson and Morgan sowing instructions:
Verbena rigida (venosa)
Half Hardy Herbaceous Perennial

* Flowers in : Summer
* Germination : Experience Useful
* Aftercare : Easy
* Ideal for : Bedding, Cottage Gardens, Patios
* Special Features : Scented
* Height : 24 inches

Dense 5cm (2in) clusters of purple fragrant flowers and dark green leaves. Adds height and interest to bedding displays. Lift tubers in autumn. Height: 30-60cm (1-2ft).
Sowing Instructions
Sow in trays, pots, etc of good seed compost in a propagator or warm place to maintain an optimum temperature of 70-75F (20-25C). Surface sow and just cover with vermiculite and exclude light. Sowing Time: February to March. After covering the seed with vermiculite give a very light spray using only half the water you would give to other seeds. Too much wet will result in poor germination.
Growing Instructions
Transplant seedlings when large enough to handle. Harden off and plant out when all risk of frost has passed 30cm (12in) apart, in full sun.
Prefers a rich, light, well drained soil.
source- http://www.thompson-morgan.com/seeds1/product/8790/1.html?OC=WEBGPS

  • Posted: Mon. 12th July 2010 12:22

Also called Verbena Venosa

Comment from CD

In forum: Verbena rigida

I bought this named Verbena Venosa before reading that it was the same as Rigida. Well worth knowing as there is lots of info for growing Verbena Rigida but much less if you look it up as Verbena Venosa.

  • Posted: Mon. 12th July 2010 12:01

Verbena spots

Message from Kathy C

In forum: Verbena rigida

Hi, Iris,
From your description, it doesn't sound like powdery mildew or botrytis blight - the two fungi that typically attack Verbena rigida. More likely, the dark brown blotches are caused by water resting on the leaves for too long after rain or irrigating. They could also be caused by overcrowded or excessively moist conditions. If you prune them down now, destroy all cut material - by burning if you are in a place you can do so. Cover the cut plant with a dry winter mulch. Don't bother spraying. If it is a fungus, it is best to spray in spring as a preventative measure to stop the fungus from coming back.
Is there any chance you could post a photo so I can be sure to rule out mildew or botrytis?
Kathy C.

  • Posted: Tue. 22nd September 2009 20:49

Verbena rigida

Question from Iris Lando

In forum: Verbena rigida

I have several of these. Starting at the base, some have had very dark brown blotches all over the leaves for at least a month. In other respects they look no different from the rest. They continue to flower but the markings are dominant and unsightly. I did not have this problem last year when they were newly planted. I am about to prune them down and destroy all the cuttings. Should I spray with something first?

  • Posted: Sun. 20th September 2009 21:57