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17 08, 2021

Ornamental Alliums

2021-08-17T17:05:33-07:00Categories: Blog, Garden Plants, Nora Harlow|Tags: , , |

I've always loved the delicate little alliums native to the west coast of North America and have long ignored the larger Mediterranean and Asian species, especially their highly bred, look-at-me cultivars, as just too formal or artificial-looking for my laid-back, mostly summer-dry garden. Allium unifolium, native to coastal mountains from southern Oregon to northern Baja California But, in much the same way that yellow flowers come to be appreciated by maturing gardeners as the youthful obsession with pinks and lavenders gives way, plants once considered unsuitable may eventually be seen as welcome counterpoints. Allium aflatunense seedheads and

23 07, 2021

The Carbon Capture Garden

2021-07-23T17:07:40-07:00Categories: Blog, carbon capture, grasses, Nora Harlow, perennials, shrubs, trees|

Carbon capture is widely viewed as a promising means of slowing global warming by reducing levels of atmospheric carbon dioxide, one of a number of gases responsible for trapping heat and warming the earth’s surface. Carbon dioxide produced by industrial processes can be captured at its source and injected underground. Atmospheric carbon dioxide is naturally taken up by plants, which transform the gas into a form that can be stabilized and stored in soil. Carbon capture is maximized by a diverse planting of deeply rooted trees, shrubs, and perennials, minimally pruned, with no pesticides and soil left undisturbed as

21 07, 2021

Teucriums Are Deer-Proof Too

2021-07-24T12:44:58-07:00Categories: Blog, Garden Plants, Nora Harlow, perennials|

Those of us with unfenced gardens adjacent to wildlands usually learn the hard way which plants are ignored by browsing deer and which, without special protections, are not. It may seem that our choices in plants are rather limited, but lush and lovely deer-resistant gardens can be made. Madeira germander (Teucrium betonicum, in flower) with sages and santolina Perhaps the widest range of deer-resistant options for summer-dry climates lies within the Lamiaceae, or mint family, which includes among its more than two hundred genera many plants that are widely used in gardens where summers are dry -- salvia,

17 06, 2021

Lion’s Tail

2021-06-18T11:29:54-07:00Categories: Blog, Garden Plants, Nora Harlow, perennials|Tags: , |

Some plants just naturally bring out the child in all of us, and lion's tail (Leonotis leonurus) is surely one of them. The whorled clusters of softly woolly yet spiky-looking, neon orange flowers can look almost cartoonish --a caricature of flowers-- spaced out along emphatically upright, six- or even eight-foot stems. Leonotis leonurus in full bloom in the San Francisco Botanical Garden Of the nine to twelve or more recognized species of Leonotis, only lion's tail, a perennial or subshrub endemic to eastern South Africa, is reliably available in nurseries. Lion's ear (L. nepetifolia), an annual native from

11 06, 2021

Embracing Wildness and Change

2021-06-12T07:30:06-07:00Categories: Blog, California Native, Nora Harlow|Tags: , , |

It is possible that the most life-negating aspect of modern landscapes is the whole idea of landscape maintenance. Landscape maintenance implies -- no, insists -- that landscapes must be maintained as originally designed, whatever the costs and losses. A lightly maintained meadow garden in California In the service of what is called maintenance, most residential front yards and almost all commercial landscapes are forced into compliance, preserving the outlines of their original design but with virtually no sign of life. Shrubs considered too large or wrongly shaped are brutally distorted. Weeds and “bugs” are sprayed with pesticides. Soil,

19 05, 2021

Climate Change and Water Supply

2021-05-19T05:29:36-07:00Categories: Blog, Climate, Nora Harlow, Water|Tags: , |

Global temperatures have been rising at least since the middle of the last century, and most projections anticipate that this trend will continue. Effects of warming vary from one region of the world to another but prominently include the likelihood that precipitation will shift from snow to rain in many snow-fed watersheds. It is also likely that snow will melt faster and run off earlier, changing the timing of peak streamflow. Snow is an important, even critical, seasonal water source for many regions with large mountain ranges, including most summer-dry climates. Snowpack accumulates in the mountains in winter when demand

20 04, 2021

Mendocino Reed Grass

2021-04-20T16:37:56-07:00Categories: California Native, grasses, Nora Harlow|

Commonly known as Mendocino or leafy reed grass, Calamagrostis foliosa is usually described as having blue-green or gray-green leaves with seasonal tints of purplish red, but that's not how it presents itself in my garden. Calamagrostis foliosa flowering in California garden This cool-season bunchgrass is worth growing not for the color of its fine-textured leaves, which for me emerge a rather dull green and remain so throughout the seasons. I grow it for its manageable size, its pleasingly symmetrical form, and the improbably long-lasting, greenish white flowers that remain neatly arrayed on arching stems as they age to

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