Q. Last year I read in your blog how to prune texas rangers. Now I can't find that article. Can you repeat it? Thank you.
A. Maybe this is it.
Q. I would like to cut back some cassia, Texas ranger and rosemary plants that has grown too large. When is the best time to do so?
A. There are three cassias that are commonly planted here; feathery cassia, silverleaf cassia and desert cassia. They either bloom in the spring or spring and fall. This means the flowers have to be formed on last year's wood if they bloom in the spring.
Basic rule of thumb is that plants that are not appreciated for their flowers then prune them back during the winter months after leaf drop. However, if it is very light pruning then you can do that any time.
|Texas ranger sheared so flowers are removed|
If they bloom in the summer months, then they put flowers on spring growth. If you prune these in the spring you run the chance of pruning off all the flowers if they are not pruned correctly. This is very often done to oleanders when they are hedge sheared during the spring or early summer months.
|What it will look like if it is not sheared|
Next year, remove more older wood from deep inside the canopy and repeat this each year “renewing” older wood and reinvigorating flowering. I hope this helps. I attached two pictures of texas rangers taken in april. One was hedge pruned. The other not. One is blooming. The hedge pruned one had all the growth cut off that would have produced flowers.