Pruning sealer (aka pruning paint) is bad news, but some folks still use it. Worse yet, some places still sell it! Arborists starting warning against this practice at LEAST 25 years ago. The black tar is especially problematic when it’s used on the sunny side of the tree trunk, which would be the south to west exposures. That’s because on cold winter days with puffy cumulus clouds, the tar overheats the wounded area when then sun is out, but the clouds cause a constant “heat/freeze” cycle. This cycle KILLS the phloem in the area, exacerbating the wound and often causing the bark to blast off the tree trunk.
Trees heal themselves from the “inside out”. They only need you to make a proper pruing cut. They literally plug their own vascular system after the wound event occurs. If the pruning cut is made properly, the tree “seals over” that wound. The sooner the tree seals the wound, the better!
So when you see pruning sealer on the shelf on any lawn and garden outlet, tell management to shoot me a note and I’ll set them straight!
COME ON, MAN! HAVE SOME PRIDE!
The photo on the left shows are really hideous sidewalk where the turf has encroached upon the sidewalk. The blue line shows the neighbor doing the right thing and keeping a nice crisp edge. The red line shows up 4 to 6 inches of crappy grass and weeds over-running the sidewalk. This really looks trashy.
Now check out that photo on the right–showing a gorgeous edge on a fabulous sward of turf-type fescue. It’s a literal horticultural erection! That’s how you do it, folks!
Lest you judge me as harsh for my criticism of the crappy sidewalk, it’s possible that the homeowners are old and of poor health. If this is the case, I apologize to them. Not you, them.
Nurserymen are always looking for new and improved plants. But the old, crappy ones still exist in our landscapes, and even the retail nurseries. Below we have a photo of an “old-fashioned” pyramidal arborvitae (Thuja occidentalis ‘Pyramidalis’). Because it has multiple leaders, a negative growth feature, the plant is prone to literally falling apart here in the Lou, where we suffer from heavy wet snows or freezing rain. Note how the plant has split into 3 parts, because it has three leaders, not just one. The plant has splayed apart.
This shrub is probably at least 15 years old and it’s too late to “fix it”. It should be removed and replaced. There a tons of new evergreens available now with a strong, central leader. There are at least 5 different colors that I can think of (blue, gray, light green, dark green, yellow), from the spruces, pines, juniper, false cypress, and even the arborvitae family. Shop at good nurseries and avoid the big box stores when you want good plants.
That’s it for this blog. I hope you enjoyed it. If you did, please do me a favor and tell your friends and family about my blog. Have them sign up for the updates!
Send me your questions! Send me your comments! Dare to disagree! Let’s roll around in the dirt and sling some mud!
Best to all of you,