Michigan Gardener - Your guide Great Lakes gardening: Garden Event Calendar / Expert Advice / Plant Profiles / Tree Care

PLEASE NOTE: In the autumn of 1995, we hatched the idea for a free, local gardening publication. The following spring, we published the first issue of Michigan Gardener magazine. Advertisers, readers, and distribution sites embraced our vision. Thus began an exciting journey of helping our local gardening community grow and prosper.
After 27 years, nearly 200 issues published, and millions of copies printed, we have decided it is time to end the publication of our Print Magazine and E-Newsletter.

We will continue to update our Website with articles and enter current gardening events in our website Event Calendar. All the best wishes for 2024 and beyond.

What are good plants to give as a wedding party favor?

March 14, 2022 • Leave a Comment

At our upcoming wedding, we want to give a seedling or plant as a wedding party favor. We need suggestions as to what tree or plants can be planted in Michigan in September. Since there will be about 500 guests, the price of each plant must be relatively low.

Congratulations on using a plant as a wedding party favor! One of the best choices for fall planting, and a Michigan native, would be a white spruce (Picea glauca) seedling. These strong conifers transplant easily, and tolerate a wide variety of soil types and sun conditions. They are used for windbreaks, lumber, and sometimes Christmas trees. They have a strong conical form and hold their limbs out horizontally. The dense branching provides shelter and food for birds and other wildlife. What a fitting long-term remembrance of your wedding.

Understanding the large quantity, you want to deal with a local wholesaler/retailer that can offer a practical price. Consider Cold Stream Farm in northwest Michigan (www.coldstreamfarm.net). Please remember that 500 seedlings will likely be prepared in bulk. You will have to separate them and individually wrap their roots in a moisture-retaining mulch and secure in a waterproof sleeve. Therefore, timing your order is important so that the seedlings are not stored indefinitely. Once received, you have approximately one week to separate, rewrap and distribute. Prepare a tag for each tree that tells guests to plant as soon as possible and the optimum soil and light conditions.

Scientists estimate there are about 9,200 undiscovered tree species

March 1, 2022 • Leave a Comment

**Coniferous mixed forest, Val Saisera, Italian Julian Alps, Italy. (Photo: Dario Di Gallo, Regional Forest Service of Friuli Venezia Giulia, Italy)**

University of Michigan: A new study involving more than 100 scientists from across the globe and the largest forest database yet assembled estimates that there are about 73,000 tree species on Earth, including about 9,200 species yet to be discovered.

The global estimate is about 14% higher than the current number of known tree species. Most of the undiscovered species are likely to be rare, with very low populations and limited spatial distribution, the study shows.

That makes the undiscovered species especially vulnerable to human-caused disruptions such as deforestation and climate change, according to the study authors, who say the new findings will help prioritize forest conservation efforts.

“These results highlight the vulnerability of global forest biodiversity to anthropogenic changes, particularly land use and climate, because the survival of rare taxa is disproportionately threatened by these pressures,” said University of Michigan forest ecologist Peter Reich, one of two senior authors of a paper scheduled for publication Jan. 31 in Proceedings of the National Academy of Sciences.

“By establishing a quantitative benchmark, this study could contribute to tree and forest conservation efforts and the future discovery of new trees and associated species in certain parts of the world,” said Reich, director of the Institute for Global Change Biology at U-M’s School for Environment and Sustainability.

For the study, the researchers combined tree abundance and occurrence data from two global datasets—one from the Global Forest Biodiversity Initiative and the other from TREECHANGE—that use ground-sourced forest-plot data. The combined databases yielded a total of 64,100 documented tree species worldwide, a total similar to a previous study that found about 60,000 tree species on the planet.

Read more from U-M…

How and when do I train and prune thornless blackberries?

February 19, 2022 • Leave a Comment

How do I trellis thornless blackberries? I have several 2- to 3-foot-tall plants that have many hard-to-tame shoots pointing in every direction. I planted them last spring and none had fruit last year. I wound the longest ones around the wire between the metal fence stakes, which are about 3 feet high. How and when do I prune?

Thornless blackberry primo canes tend to grow along the ground like a vine for the first two years after planting. They also do not produce a large crop the first season. Proper pruning and strong wire support are needed. For thornless blackberries, you need two wires at heights of 3 feet and 5 feet from the ground between posts 20 feet apart. Because of the vine-like nature of this bramble fruit, individual plants should be 10 feet apart.

Now for pruning. Cut back the main trailing canes at the top by several inches in late winter to 4 to 6 feet. That would be roughly March, before bud swell. This pruning forces development of sturdier, more fruitful canes. Keep them tied to the upper wire. For wild lateral shoots, select only those parallel to the wires, trimming them back to about 12 inches. Guide and tie them to the lower wire. Remove cane shoots that go out perpendicular from the wire trellis. This forces the plant to concentrate its energy on the remaining canes for healthy growth and better fruit production. Make sure you prune out any damaged or weak, spindly canes. Proper pruning and trellising will bring your thornless blackberries to an enjoyable production level.

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