From the Greenhouse
Taking a Breath
October 9, 2026 · The Hoosier Boy Newsletter
From the greenhouse
Caleb Schlegel
Fall mum season is officially behind us. After a few months of watching crops, shipping plants and thinking several weeks ahead, this is the one stretch of the year when the greenhouse actually changes pace.
October and November have traditionally been our quietest months. There’s still plenty going on, but it’s a different kind of work. The poinsettias are growing and beginning to color, we’re getting the houses ready for winter, and the plans for next spring are already well underway. I’m taking advantage of the timing myself and heading to Portland for a few days to recharge.
This week’s lead story is about who owns the companies behind the plants you buy, and why that has started to change. After that, a question a landscaper asked me recently about plant growth regulators, and a practical guide to getting a few more weeks out of the mums on your porch.
This week’s Growing Guides

Who Owns the Companies Behind Your Plants?
If you bought a Proven Winners petunia this spring, the company that bred it took on an outside investor last fall. Most gardeners never heard about it. A second young-plant supplier did the same…
Read the guide · Caleb Schlegel
What Are PGRs, and Why Do Greenhouses Use Them?
A landscaper asked me whether we use PGRs, and when I said yes, he said he did not want them. I understood where he was…
Read more
How to Keep Your Mums Blooming Longer
You buy a mum covered in flowers, set it on the porch, and two weeks later it looks finished while the one on your…
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