Michael Loos
Ohio State University Extension
Q: I have a Christmas cactus that is already finished blooming. Some years, it blooms even earlier or not at all. What can I do to make sure it blooms at Christmas?

A: Christmas cactuses (Zygocactus cultivars) are true cactuses, but they grow as tropical jungle dwellers. They will bloom when the proper growing conditions are met. Cool night temperatures will often initiate flower production. If the plant is outside for the summer, cool September temperatures will begin the process.

To slow the production of flower buds, you might consider bringing the plant indoors before night temperatures drop below 55 degrees. Keep the plant in bright light. About mid-October, place it a cool location away from warm radiators or heat vents. Buds should form in time for the holidays.

If you have trouble getting Zygocactus to bloom, make sure you are treating it well during the growing season. Poor growth will hinder flower production. Zygocactus prefer well-drained, evenly moist soil. Do not let it dry out too much between waterings. After it blooms, allow the plant to dry out a bit more than before blooming. Ongoing cool, winter temperatures will extend the bloom season, and you may see flowers sporadically through the winter until spring.

Q: There are stinky little berries under my Ginkgo tree. What are they? Can I make them go away?

A: Congratulations! It’s a girl! You have a female Ginkgo tree. The fascinating Gingko is an unusual relic of prehistoric days. They are dioecious, which means the trees have separate sexes, male and female. Females produce seeds. Ginkgo trees are related to pine trees, and the berries you are seeing are from your tree. Unfortunately, the fleshy portion of the fruit produces a rather disagreeable smell.

In horticultural literature, it is often referred to as “disagreeable,” “evil,” “offensive,” “disgusting,” “repulsive,” and “abominable” and is often compared to the odor of vomit. It is due to the malodorous chemical compound butyric acid produced within the fleshy coat. Once the soft coat and the hard nutshell are removed, the interior kernel is quite delicious and can be found as an ingredient in more esoteric Asian recipes.

There is little you can do to prevent seed production. Some years, there will be few seeds to collect. In other years, you will see bumper crops. If you like the tree but refuse to have berries, you will have to cut down the tree. You can opt to purchase a known male variety like “Autumn Gold.” This cultivar (cultivated variety) will be a fine landscape specimen without the production of fetid fruit.

Q: I planted a new flower garden this summer. Will the snow hurt it?

A: Snow will act as an insulator from wind and oscillating temperatures. It will protect perennials from heaving out of the ground when temperatures freeze and thaw the surrounding vicinity. I allow leaves to cover the beds and then snow to cover the entire area. Newly planted perennials or those in very loose soils may pop out of the ground regardless of snow cover. Gently push them into the proper place as needed.

Be careful of poorly drained areas in the garden. Snow accumulation and ensuing wet soils during melt can cause root system death, and plants will suffer. Avoid piling snow on poorly drained areas when shoveling.

When shoveling or blowing snow, aim the snow away from shrubs. Snow lying on boughs may weigh down or break branches.

Call a master gardener for advice from 10 a.m. to 1 p.m. Monday and Thursday at 216-429-8235 or e-mail your questions to mgdiagnostics_cuya@ag.osu.edu anytime. Gardening information is also available at www.cuyahoga.osu.edu and www.webgarden.osu.edu. Loos is the horticulture educator of the Ohio State University Extension, Cuyahoga County, 9127 Miles Ave., Cleveland OH 44105.
Source

ACACIA (a-ka’sha). About 1200 species of acacia are scattered through the warm regions of the world. Most of them are shrubs or small trees. Some are matted plants a few inches high. All are thorny and pod-bearing. The tiny sweet-smelling blossoms cluster together in fluffy balls or cylinder shapes. They range in color from deep yellow to almost white. The leaves are usually grayish and fernlike. The acacia is quick-growing and short-lived.
Australia has about 300 species of acacia. The early settlers called them wattles because they used the pliant branches to make wattle-and-daub huts. The golden wattle is Australia’s national Bower.
In the southwestern United States acacias are grown in many parks and gardens. The ornamental species were imported from Australia. The native catclaw (Texas mimosa) grows wild and (Types Of Flowers )is heartily disliked because of its strong hooked spines. The Arizona Indians, however, made meal of the pods. Smaller acacias are eaten by cattle and horses.
Gum arabic is obtained from an African species (see Gums and Resins). The Australians get tannin, used for tanning leather, from the bark of some species and make furniture of the hard, dark “black-wood” acacia. The wood of an Indian species is the chief source of catechu, a dye for true khaki. France grows several kinds for perfume.
The genus acacia belongs to the mimosa tribe of the pea family . The black locust is sometimes called “false acacia” . The plant that florists call mimosa is actually an acacia.
Several products in the food and manufacturing industries are obtained from acacia. The best known of these is gum arabie which is used in both candy and medicine. Other acacia gums are used in dyes. Tannin, used for tanning leather, comes from the bark of some acacia trees, especially the wattle.

There are only a few members of this genus in the United States. The most important of these is the cat’s claw tree. It is found on the dry, steep hillsides and canyons of the Southwest. Acacias also are grown in California where the winters are mild. Indians use the seeds from the pods as food. In the United States the name acacia some-mes is used for locust trees, which are mem-ers of the same family. Both the bristly and clammy locusts have been called rose-acacia.