The sod is just 6 months old in a new subdivision. I have received several suggestions from mole crickets to grasshoppers to earthworms.
It could certainly be any of those. without photos it will be very hard to tell. Please include a few, and I will be more than happy to take a look.
They are mostly on the underside of leaves and are hard to spray, but I don't want to use insecticides in my garden.
Without an insecticide of some sort, even if a natural one , aphids will completely destroy your plants. There are many non-toxic pesticides that are organic, or that you can make from ingredients that are likely in your kitchen, but I'm afraid that without some sort of insecticide, you will have to start over next season, unfortunately.
I have what I suspect are ant hills in lawn; how do I get rid of them and stop them from coming? Also, how do I know for sure they are ants?
I would watch the small hills to see if you can identify it as ants.
They would be visible moving in and out of the hole.
This article will help you.
https://www.gardeningknowhow.com/plant-problems/pests/insects/how-to-control-ants-in-lawns.htm
I have made up some garlic spray to the recipe on your site, however the information about dilution rate is not complete.it states "dilute your garlic spray with 2 1/2 cups of water, but does not say how much of the 2 pints of concentrate made in the recipe is used.
Yes. Any more dilute and it is ineffective. Any less dilute, and you may run into burns on your foliage. Alternatively, there are ready made sprays that use garlic oil, but have several other ingredients as well. I use a product from FoxFarm called Force of Nature: Miticide. It contains garlic oil, as well as an entire list of organic plant derived chemicals.
That will be how much that you add to the whole solution. Because it is not something that stores for very long, it is intended to be used up within a few days to a week. Storing in the fridge may get you another week out of it, but it doesn't store for very long.
Are you sure about that, if so I might just as well use the solution as made because 2 1/2 cups is only about 1/2 pint into 2 pints of product!
Found on top of our dustbins recently with ivy growing on wall above.
I can't identify what you have in these images.
If you suspect a pest issue, make an inspection of the leaves and stems.
Black vine weevils, mites, mealy bugs, ivy aphids and scale are all known to feed on English ivy.
Neem Oil is a good treatment.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
What household ingredients could be used to spray on outdoor plants to keep bugs away?
These articles will help you.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/homemade-soap-spray.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/white-oil-insecticide.htm
We have lots of this bug in our garden this year. They are only found buried in the flowers, eating the center of the flowers (annual, perennial, roses, etc...). Any idea on what it is and how to control them would be much appreciated. Thanks.
This appears to be an Aphid.
This article will help you.
https://www.gardeningknowhow.com/plant-problems/pests/insects/homemade-aphid-control.htm