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Article ThumbSunny Disposition, Shady Needs

It is always a topic of conversation: What plants work well in sun or in shade? Or both? However, the conversation has taken on a slightly different perspective for 2014.

The plant world has been turned upside down due to a disease that has impacted one of gardeners’ favorite shade plants — Impatiens walleriana. Impatiens are the standard for any annual shade garden, and varieties belonging to this class have died in Europe, the U.K. and now, North America, from a disease called downy mildew (Plasmopara obducens). Infected plants start to drop leaves overnight and only the plant stems remain after a few days. So what can you replace them with to give color in a shaded location? Here are a few suggestions.


Article ThumbGeums Are Gems

I once had a friend tell me, “I am adding more geums to my garden – they are so lovely and delicate. And now they come in more colors than ever.” So I nodded and smiled and kept my mouth shut because I realized that I actually didn’t know what a geum was.

After searching the Internet I found that I knew these flowers well – I had seen geums a thousand times. The native Geum trifolium is what I knew as prairie smoke. But I still didn’t know much about cultivated geums, which are also called avens.


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questions

What three dwarf shrubs do you think gardeners should know about and why?

Can you tell me if the African daisy Osteospermum ‘Springstar Aurora’ can be winterized here? It is a healthy plant?

Our Russian sage (Perovskia) is full and bountiful but will not stay upright. Is there anything we can do? Is there a way to split some off when it has outgrown its space? Should it be trimmed back in fall or spring?

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