Robusta



In terms of R. rugosa hybrids, I have just the opposite feelings about 'Robusta' (KORgosa) as I previously mentioned about 'Purple Pavement'.  I like the bright clear red color of Robusta far more than the muddy rose-pink of PP, but the 'Robusta' bush is an awkward thorny danger to man and beast.  I have two, at either pole of an elliptical bed that I refer to as my "east rose berm", but I wish they were farther inside the bed each time I snag my clothes on them in passing.  'Robusta' is the one rose that makes me wish I had chain mail gloves during spring trimming.

'Robusta' grows far less dense than 'Purple Pavement' and the form appears more like a bad Hybrid Tea with its copy of a Hybrid Tea's ungainly rigid cane spread.  'Robusta' grows about 6 foot tall and almost as wide in my garden, and in previously more Zone 5 winters, it might have a little killback on a few canes.  He is a single rose, of 5 large petals with occasional repeat, and this is one of my "indicator" roses for blackspot.  In other words, unlike many of the roses I grow, this one needs occasional spray else fungal disease will take off most of the leaves.  'Robusta' was bred by Reimer Kordes in 1979 from a seedling cross with R. rugosa regeliana.  In my experience, many of the Kordes roses (for example, 'Illusion' and 'Rugelda') have wicked thorns, so the evil spikes on 'Robusta', a triploid, are no surprise to me.  There is no fragrance that I can detect.

Between the lack of disease resistance and the thorns, you might wonder why I persist in growing this rose, but look no farther than that bright cherry-red color.  What a beacon 'Robusta' makes in my garden when he is in full bloom! Of course, if you follow that beacon you'll end up sliced into ribbons, but that is just one of the realities of loving a good really red rose.  Come to think of it, why do I grow 'Robusta'?

I can  think of only really good reason to grow a large hedge of this rose:  to limit trespass across your yard from neighborhood school children.  Or perhaps if you wanted to have a sure way to protect a daughter from an avid suitor at her window.  A few of those thorns, properly placed, would take the ardor out of anyone.



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Purple Pavement

If there are dependable roses for a prairie garden; hardy, disease-free, tough pioneer roses, then surely the Rugosa's should be numbered  among them.  One must, however, learn to take the bad with the good of Rugosa's.   Many are fragrant and their leathery leaves resist blackspot and insects better than most modern roses.  On the downside, they often grow to be enormous bushes with a wicked set of thorns and they can sucker like crazy.  A few Rugosa hybrids, however, are the exception to the rule, and in my garden I would put the relatively recent hybrid 'Purple Pavement' in that latter category.

'Purple Pavement' was bred by Karl Baum in 1983 and sports a semi-double bloom with a good strong sweet fragrance and occasional repeat.  This is a truly "round" bush rose suitable for use as a low hedge. I haven't pruned the pictured bush at all.  Described as growing by helpmefind.com to 5 foot tall, it has reached only 3 feet in height and width in my garden in its 4th year and it has yet to sucker.   It is rated hardy to Zone 3b and withstood last summer's heat and drought very well in my garden.  I  also noted in a previous post that Purple Pavement can contribute a little fall color to the garden, the leaves turning yellow before finally dropping down and at least a few fat orange hips left behind.  It is not a well-publicized rose so don't feel bad if you haven't seen one. Suzy Verrier lists it, in her encyclopedic Rosa Rugosa, but only in a single line. It is not mentioned in Osborne and Powning's Hardy Roses, nor in the classic rose compendiums by Peter Beales.   There is a German synonym for 'Purple Pavement' is also known as 'Rotesmeer', if you're having trouble finding it.

The only drawback that I would list for 'Purple Pavement' as a garden rose is the appealing (to me) bloom color.  I am not personallly fond of the magenta-purple-pink common to many of the Rugosa hybrids such as 'Hansa' and 'Rugosa Magnifica'.   'Purple Pavement' may be described as "red" in many sources, but it is definitely "rugosa purple-pink".  If you like that hue, however, you might want to grow more of them than the single specimen that I allow to exist.  At least it minds its manners in the garden and doesn't provide you with wide-spread offspring to muddy up your color scheme.