Cyfluthrin perfect for killing ants

I am having trouble getting rid of an ant hill in my yard. I know you have mentioned using cyfluthrin and I have found cyfluthrin as an ingredient in some ant killers, but it seemed like there wasn’t very much of it in the mix.

Is there a certain name brand I should be looking for?

— Julie

Cyfluthrin is my first choice for getting rid of ants and keeping other insect pests from getting into the house.

Don’t fret about that tiny little percentage of active ingredient. Cyfluthrin is a third-generation synthetic pyrethroid and with each generation, we’re using about one-tenth the product as the generation before.

It is wonderfully effective on insects and we’re not having to put as much of the chemical out there to do the job.

The other thing is that most cyfluthrin products available are in a ready-to-use form and not in a concentrate, so the percentage will be even less. There are a few cyfluthrin products in a concentrate, but you’ll have to do a bit of looking for them.

I am considering planting three quaking aspen trees in my backyard and am wondering if this will interfere with sprinkler lines.

— Sarah

I’ve never seen quaking aspens interfere with sprinkler lines, especially if those lines are made out of PVC (the rigid white plastic pipe).

Aspen generally have shallow roots, growing above where sprinkler lines are usually buried and the wood of the tree is somewhat soft, that is, it’s just not that strong of a tree.

I’m sure there’s someone out there who may have had problems with them, but that happens so infrequently that it’s just not worth worrying about.

 

I’m looking for a foundation plant for the northeast corner 
of the house. We would like a flowering plant or something with some color. We live in 
Cedaredge.

— Alice

There are a whole bunch of different plants to choose from, but what you choose will likely depend on how tall you’d like the plant to grow.

In shorter shrubs (4 feet tall or less), you could choose from barberry, alpine currant, emerald mound honeysuckle, Annabelle hydrangea, sunburst hypericum, dwarf snowflake mockorange, potentilla, lodense privet, dwarf spirea, dwarf weigela and some varieties of shrub rose.

All of these will tolerate sun. If it is shady, you could consider boxwood, berri-magic holly, endless summer hydrangea or compact oregon grape.

If you need something taller, there are loads of choices there as well. If you get a chance, stop by the nursery. We have books we’ve made up with appropriate descriptions and pictures to give you an idea of what each plant looks like.

 

My pink beauty potentilla looked a little rough on one side and did not flower this year.

It receives full afternoon sun. Any suggestions?

— Kellie

Your pink beauty potentilla would be happier with shade in the afternoon. That may not be much of an option for you, but if it is, plan on moving the plant in March.

You know, when these guys first came out we thought they would work pretty well, but they haven’t turned out as well as we hoped.

They haven’t been able to tolerate full sun here (something most all of the pink and red potentillas can’t do) and they don’t flower very heavily and their blooms are white or a very pale blush pink.

Dennis Hill is the nursery manager at Bookcliff Gardens, bookcliffgardens.com. Send questions to Bookcliff Gardens, 755 26 Road, Grand Junction 81506; or email .(JavaScript must be enabled to view this email address).


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