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Winter Rose Care & Pruning

Although major rose pruning is not done until late February into early March, there are a few things I do to get roses settled in for the winter. First, I wait until the first frost has occurred before I do anything. That happened on December 1 this year, a little later than normal. If you do any pruning prior to that, new growth will be encouraged, and it will just be nipped later. I will then do minimal pruning, about 1/3 of the plant or to about waist-high. It does not matter how you make the cuts. More precise pruning will be done in late winter. Giving roses a slight pruning at this time will decrease the damage from strong winter winds. Roses are not deeply rooted, and any long canes can spell trouble. Pick off any remaining leaves, if possible. I know that can be a big job if there are still many leaves left on the plant but you don't want leaves, especially diseased leaves, left to fall and harbor spores for next season. Clean the area around the base of the rose. Rake out ...

My Favorite Plant This Week - California Lilac

When I first visited Portland in 2013, one of the plants that caught my attention was a shrub smothered with vibrant blue flowers. I saw it everywhere - in sun, shade, hellstrips - and had no idea what it was. Later, I discovered the name - Ceanothus - commonly referred to as "California Lilac" or "Wild Lilac". There are numerous cultivars, ranging from giants that soar to 12 feet or more ("Victoria") to groundcover types that stay below 2 feet. In addition to size differences, they can also vary in bloom and leaf color.

Of course when I started my garden three years later, Ceanothus was at the top of my list. I stumbled across the "Julia Phelps" variety at Tsugawa Nursery and planted it on March 17, 2016. They are fast-growing and this is what she looked like last year -



Fast forward one year later - this year -



Yes, it is getting a little bit out of control. But what a beauty! In their native California, they grow on rocky slopes. They thrive on little water and full sun (in fact, most gardeners have told me not to touch it during the summer months no matter how dry it gets). And never fertilize them! In addition to being a traffic stopper, bees love it. If there is a drawback, it is that they do not have long lives (usually less than 10 years).

The flower buds begin to swell in mid to late April and it seems to take forever for them to open. They open gradually and the color intensifies as the temperatures rise. Michael, who gets up with the birds, says he likes to sit at the kitchen table and watch the color change as the sunrise gradually gets higher. Of course, the color is very magical right before sunset.

There are three other Ceanothus in our garden. Ceanothus thysiforus 'Black Diamond' has beautiful variegated foliage and bright blue flowers. This one is also a vigorous grower that has reached 6 ft. in 3 seasons. We have hacked this one back, before being told that pruning is tricky for them, but this one does not seem to mind and shoots new growth out immediately.

Ceanothus 'Black Diamond'



Ceanothus impressus 'Vandenberg' was planted just last year and came from Yard N' Garden Land where I work. It was looking sickly and I rescued it, thinking that it probably would not make it. However, it is performing nicely along the hellstrip. So far, it is not near as showy as Julia.

Ceanothus impressus 'Vandenberg'

And lastly, Ceanothus foliosus 'Berryhill', a groundcover type that I got at Joy Creek Nursery. Sadly, this one has never bloomed. I love the form and shape of it so I'm not giving up on it yet.

Ceanothus foliosus 'Berryhill'
Text and photos by Phillip Oliver, Dirt Therapy

Comments

  1. What an interesting shrub. No wonder you like it, those blooms! I think you can do anything to plants and they will grow for you.

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  2. Goodness, it's been 3 years already? The slow opening of the Ceanothus flowers gives the shrub different hues along the way. I find it mesmerizing. Although Berryhill isn't as showy (yet?) as Julia, I'm glad you put it in the post; it gives a glimpse of the amazing terraced slops of your garden. I'd love to see a more detailed view :-)

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  3. Holy moly, your Ceanothus are glorious!!!!

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  4. I've never heard of Ceanothus before -- here on the east coast. It's beautiful. Fragrant like lilacs?

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