Why I Oughta...

After battling a vast aphid invasion on our Cardoon plant (planted IB2DWs last Fall and came back this year), appears ready to burst with a couple of big, spike-y blooms.  I planted it on a whim late, late last year based on seeing this in the Fragrance Garden at the Morton Arboretum and didn't know what to expect.  At the time when I bought it, the sign at The Growing Place called it a "Biennial" - which I think means that it won't bloom the first year - so this is the bloom year.  This piece from the University of Wisconsin talks about how you don't normally see a bloom in cooler climates (like ours), so we might be in for a real treat.   See below for a look at our Cardoon buds/blooms as they grow up/out before they open: I went at the aphids pretty hard with both Neem Oil, our hose with a high-pressure setting (just to try to blow the aphids off) and then, ultimately with a insecticide dust.  I'm hoping the aphids didn't get these to a place where t

One of the things that I've had on my last few annual 'to do lists' in the garden is to keep up with various seasonal tasks like feeding, treating, pruning, etc.  Basically....good garden and tree maintenance.  This year, it came in at #16 on the list and included items like feeding the roses ( which I did last week for the first time this season ) and dividing perennials, protecting everything from winter and rabbits and... treating trees.  For the past few years, I've had the fine folks at Davey do an annual deep-root feeding treatment of everything in the yard (in the fall) and I've complemented that application with one of my own on a few select trees.   Start back in 2020, I noticed that our Greenspire Lindens were being covered in Yellow Jackets and upon inspection, it appeared that the trees were inhabited by aphids - which in turn created honeydew - which was what the Yellow Jackets were after.  In order to get rid of the Yellow Jackets, I had to get rid

Starting last Spring, I decided to be a little more proactive in terms of protecting some of our trees from pests.  That started with the Greenspire Lindens that are currently espalaiered into a horizontal cordon.  For the past few years, I noticed that the trees were being swarmed with yellow jackets and/or wasps .  Turns out, they were there feasting on aphids that are drawn to Linden trees.  So, starting last year, I treated both Lindens with five gallons of this tree protect & feed solution .   It seemed to work and there were no wasps around all season.  This season - NOTE: I'm posting this in early June, but I actually did this project in early May, 2022 - I pulled back the mulch around the Lindens and made a little ring for the solution to soak in around the base of the trunk.  I made up five gallons of solution per tree and slowly dumped it on. See below: This year, I also decided to treat the Saucer Magnolia tree out front the same way.  Last year, I noticed it seemed

A couple of weeks ago, I took some steps to head off the annual aphid infestation that has been occuring on our Greenspire Linden trees that leads to them being swarmed by Yellow Jackets who are eating the aphids.  Back in mid-May, I applied a Systemic Soil-Application insecticide and - just to be doubly sure - I also sprayed a persistent contact spray to the leaves just to kill whatever might already be on the leave s.   As a reminder, this is what the underside of the leaves looked like when the Linden Aphids were living on them (back in late Summer 2020).  Doing this check-in on the Lindens (which...are currently espalier'd in a horizontal Cordon, btw), I looked at the underside of the leaves.  And, while I don't see any of the aphids like I did last year, I do see some white, hairy spots at the intersection of the leaf veins.  See below for a zoomed-in shot of the leaves: I've done as close of an inspection as I can on these photos and I can't tell what that hai

Last week, I posted a photo of my horizontal cordon espalier Greenspire Lindens as they were about to break bud for the Spring. The trees are starting to really fill out and look like I wanted them to look - now in their fifth growing season.  But, last year something happened.  These trees were swarmed by yellow jackets .  And, after a little bit of research, I discovered that the trees were inhabited by Linden Aphids - which is (apparently) quite common.   Last Fall, I took the first step to trying to treat the Aphid infestation - and figured out that there are two ways to treat trees:  with either persistent contact treatments or systemic treatments . Persistent contact sprays - they kill what they contact.  And they'll last from a few hours on the leaves up to a few days.  They're good for more immediate results, but they have some downsides in that they may harm non-targets (meaning...they will kill not just aphids). That's what I tried to use November .  My thought

A week or so ago, I posted about how our pair of espalier Greenspire Linden trees had come down with an infestation of aphids .  I asked the Master Gardener at the University of Illinois and they confirmed they were Linden Aphids and recommended a synthetic insecticide.  They also pointed me to this post from Colorado State University that lays out the two types . Persistent Contact Insecticide Sprays. And Systemic Insecticide Sprays. First the latter:  systemic.  These are ones that 'move through' the tree and can handle aphids that you can't reach with a topical/contact spray.  From CSU: A few types of insecticides have the ability to move into the plant and move systemically. Because of this mobility these systemic insecticides can provide better plant coverage and often provide better control of aphids than do non-systemic insecticides. Systemic insecticides are also able to kill aphids that are protected within a leaf they have curled. Timing of application is also

Back a few weeks ago, I posted some photos showing how Yellow Jackets covering our espalier'd Greenspire Linden trees due to (based on what I found line) what appeared to be aphids infesting the tree.   Recently, we had a couple of nights of frost (overnight) and that has killed away all the yellow jackets.  So, I could finally get close enough to the tree to inspect what is going on.  My assumption was that the frost likely killed off WHATEVER was eating the leaves and causing the Yellow Jackets to feast.   But, I was pleasantly surprised when I grabbed a leaf and turned it over.  The lace-like leaf had a couple of inhabitants on the underside.  Here's what I saw: See them?  Here's a closer look: Two guys that are yellow and black striped and hanging out on the underside of the leaf. But, what are they?  Pretty sure they are Linden Aphids.  The Bug Guide has a photo that sure looks a lot like these things and, ummm, they're on a Linden tree.  But, what do I do next? 

 For the past two years, I've noticed that some sort of bee 1 has been finding a home on our espalier'd Linden trees.  There has been A LOT of them.  Swarming around the tree, climbing on the leaves, etc.  I If you look closely at the photo, you can see some of them.  Each tree has dozens of them. I figured that they had a nest close or something.  But, I wanted to find out more.  First, I wanted to figure out what they were.  This handy chart from Rescue.com shows difference between wasps and yellow jackets .  Based on that, I'm pretty sure these are Yellow Jackets.  They're short and fat.  So, I went out onto the Web to try to figure out why our Lindens are covered in these things.  And, sure enough, there are a series of posts on Extension.org.  Including this one that was answered by Robert Cox from CSU that tells me that the Yellow Jackets aren't there because they love the Linden . They're there because the tree has aphids is what he suspects. Yellowjacke