Fighting Argentine Ants – killers of California natives and the scourge of the kitchen

If you live anywhere in a suburban area, you have encountered the plague of Argentine ants (Linepithema humile), those little brown irritants that crawl up your leg while reading a book outside, cover your kitchen counters with massive troop movements, wipe out native harvester ant colonies (which are the primary food of our native horned lizards), and have now been revealed as possibly one of the key predators of California native plants.

Evil, non-native brown Argentine ants attacking our native harvester ant. Photo from the Scratching Post Blog.

These little buggers appear do their dirty work by forming colonies near or around the base of their victim, collecting sucking insects like scales from the surface and placing them on the roots (they use these plant sucking creatures for the sweet “honeydew” fluids they excrete), and possibly spreading pathogens to the plant. How do you know if your native plant has been attacked? The lead symptom it typically death. Suddenly, the leaves start to look sick and limp. By the end of the week the leaves are drying out and beginning their journey to various shades of morbid brown.

Here at the Chaparral Institute garden we have lost a number of plants suddenly – a huge flannel bush (Fremontodendron californicum),  a gorgeous white bark ceanothus (Ceanothus leucodermis), and three beautiful Catalina ironwood trees (Lyonothamnus floribundus). Fortunately, we still have one ironwood left. But around the end of August it was looking sick. By early September the leaves were brown.

The right branched trunk was dying. Note brown leaves.

Not knowing the cause, we initially chalked it up to possibly over-watering (we didn’t) or some kind of soil-borne disease (not sure what). That was until we had the fortune to remember a chat we had with one of southern California’s premier native plant landscapers, Greg Rubin. Greg was the first to discover the possible impact of Argentine ants on native plants and had devised a technique to fight back

Greg Rubin.

We pulled back the back of the ironwood at the tree’s base, and yup, out spilled an army of Argentine ants. They all came out from directly under the portion of the branched trunk that was dying.

And the ants came marching. Notice the dirt at the base of the trunk that had been placed there by the ants. Red arrows point to some of the villains.

We called Greg and he provided us with a detailed recipe of nutrients, insecticide and a dash of an organic compound that is known for killing pathogens. We poured the solution into a basin around the tree as per instructions.

Greg Rubin’s prescription.

It has been about a week since we applied Greg’s recommended treatment. So far, so good. The ants are gone and the left branched trunk seems to be maintaining itself. We shall return in a few weeks and report.

Here’s additional information on the damage Argentine ants do and how to control them.

If you want to contact Greg for advice on any suddenly ill native plants in your garden, please visit his website.

Oh, here is the flannel bush we lost several years ago, before it dropped suddenly.

Our beautiful flannel bush before its sudden passing. Yes, those are tennies on the wire –  one of our family ritual traditions. At 13-years-old they go up, at 18 they come down, then bronzed. Yes, bronzed like baby shoes.

 

 

 

 

 

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The California State Legislature Burned Us

The consequences of the last California legislative session were astounding. From all the rhetoric, one would think our legislators would have implemented policy to help us adapt to wildfire and make us safe again. Unfortunately, with the exception of one bill, that was not the case.

The legislature and Governor Brown ignored where and why dozens of people died and thousands lost their homes to wildfire since October, 2017. Instead, at the urging of the timber and biomass industries, the legislature focused on forests where only 1 in 17 of the state’s most devastating wildfires have occurred. They completely ignored the main reason our wildfires have been so devastating – planning agencies have allowed the construction of flammable homes on flammable terrain. The legislature also reduced the liability of utilities for the fires they cause.

Addressing the flammability of communities themselves? Barely a word.

In case you missed them, our solutions are offered here.

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Nature – The Cause Worth Fighting For

As I have listened to the unenlightened blame dead trees for all our fires, where there are no dead trees, have suffered under the barrage of ignorance from politicians and industrialists who talk of clearing forests to protect us from fires that occur nowhere near such forests, and fretted over the demonization of habitat under, between, and far from forests in the form of small plants and bushes, I have found myself embittered, saddened, remorseful, worried about our future as a species.

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Have we really become so disconnected from Nature that we now make up stories to push her further away, to justify her domestication until all that is left is the occasional weed between the cracks of a sidewalk, or the random shrub that appears in the human-made, park-like forest? Do we really believe that logging companies, burners of smashed habitat, and Novocained bureaucrats who have barely left their desks in years to kiss an unfettered stream, have our best interests at heart? Do we honestly think such broken souls will fix Nature for us so that she will finally bend to our will? Do we really believe in our own hubris so much that we really think we can force Nature to reflect our fantasy of a bucolic place that has lost all manner of teeth and spirit? What kind of world do we think we are creating?

I shall suggest what type of world.  A world filled with filtered air, indoor lights, meeting rooms, refrigerators, and fat asses.

Log the trees? Clear the brush? Dam the rivers? Create the final app that will suck us all into an artificial world that allows us to forget where we came from?

I say to hell with that. To hell with the politicians who listen to the entrenched bureaucracies who care more for their budgets and careers than for the mission they are charged to follow. To hell with those who listen to the money instead of listening to the people who can not travel to the capitol or to those who speak for Nature for no monetary return. To hell to the industrialists who infect the capitol with their multitudes. To hell with the non-thinking masses who fail to question anything they hear, especially, of course, if it confirms their own vapid beliefs twisted into a form that no longer recognizes truth.

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Posted in Becoming Aware of Yourself, Nature Education, Nature Stories, Reconnecting to Nature, Value of Native Species | 5 Comments