(Oneleaf Garlic)

This ornamental onion, a bulbous perennial, is grown for its showy dense umbels of star-shaped lavender-pink flowers, which bloom in the late spring. Strappy, blue-green leaves wither before the flowers emerge. Alliums belong to the onion family and thus all have the familiar pungent fragrance when their leaves or stems are crushed. Allium unifolium is native to California, where it grows in full sun and well-draining, often sandy soil.

In the fall, plant this bulb two inches deep in well-drained...

(Italian Alder)

Glossy heart-like leaves and the persistent brown seed fruits make Italian alder a great shade tree with multi-season interest and grace. An upright deciduous tree that does not get too wide, it hails from southern Italy and Corsica. Its barks becomes light gray-sandy brown with shallow fissures and small plates, often blotched.

In early spring this tree flowers. The male flowers are in drooping, finger-like clusters called catkins and are yellow-green. The female flower are small and red and...

(European Alder)

Black alder is a medium-sized, fast-growing, deciduous tree native to Europe, western Asia, and northern Africa, but has naturalized in other regions including the northeastern and central United States. It bears handsome, glossy, dark-green leaves from spring to fall, and its catkins provide mild interest in winter and early spring.

Requiring sun but thriving in most soils, it excels as a shade or screening tree in sites that are too damp or barren for other trees. It may be invasive in some...

(Cutleaf European Alder)

Black alder is a medium-sized, fast-growing, deciduous tree native to Europe, western Asia, and northern Africa, but has naturalized in other regions including the northeastern and central United States. It bears handsome, glossy, dark-green leaves from spring to fall, and its catkins provide mild interest in winter and early spring.

Requiring sun but thriving in most soils, it excels as a shade or screening tree in sites that are too damp or barren for other trees. It may be invasive in some...

(European Alder)

Black alder is a medium-sized, fast-growing, deciduous tree native to Europe, western Asia, and northern Africa, but has naturalized in other regions including the northeastern and central United States. It bears handsome, glossy, dark-green leaves from spring to fall, and its catkins provide mild interest in winter and early spring.

Requiring sun but thriving in most soils, it excels as a shade or screening tree in sites that are too damp or barren for other trees. It may be invasive in some...

(Thinleaf Alder)

Ranging from a large shrub to a medium sized tree, thinleaf alder has red and golden pendent flowers (catkins), green and gray foliage and persistent fruit nutlets and smooth bark that make it interesting even in winter. A deciduous large shrub to small tree depending on severity of winter or availability of soil moisture, this species is native to Europe and the Caucausus as well as in North America from California to Canada and across the northern United States. The bark is usually smooth and gray,...

(Golden Thinleaf Alder)

Ranging from a large shrub to a medium sized tree, golden thinleaf alder has red and golden pendent flowers (catkins), yellow-green foliage and persistent fruit nutlets and smooth bark that make it interesting even in winter. A deciduous large shrub to small tree depending on severity of winter or availability of soil moisture, this species is native to Europe and the Caucausus as well as in North America from California to Canada and across the northern United States. The bark is usually smooth...

(Weeping Thinleaf Alder)

Ranging from a large shrub to a medium sized tree, weeping thinleaf alder has red and golden pendent flowers (catkins), deep green foliage and persistent fruit nutlets and smooth bark that make it interesting even in winter. A deciduous large shrub to small tree depending on severity of winter or availability of soil moisture, this species is native to Europe and the Caucausus as well as in North America from California to Canada and across the northern United States. It is an upright tree with drooping...

(Japanese Alder)

Glossy green leaves and the persistent brown seed fruits make Japanese alder a great shade tree with a broad adaptability to landscape soils and moisture. A pyrimad-shaped deciduous tree that does not get too wide, it hails from Japan, Korea and China's Manchuria. Its barks becomes light gray-sandy brown with shallow fissures.

In early spring this tree flowers. The male flowers are in drooping, finger-like clusters called catkins and are yellow-brown. The female flower are small and purplish...

(White Alder)

White alder is a large, fast growing, short-lived, deciduous tree native to the western United States. It bears glossy, nearly diamond-shaped, dark green leaves from spring to fall. Its catkins provide mild interest from winter and early spring. White alder grows best in sites with full sun but also excels as a shade tree. It thrives in most soils and grows will in sites that are too damp or barren for many other trees.