If I have already used Sevin powder on my vegetable plants, may I still use purchased ladybugs? Will the dust harm the ladybugs? Or how long should I wait to add ladybugs?
Generally, ladybugs will avoid the dust. That said, Sevin will harm these and many other 'helpful' insects. The best thing for organic insect control in the garden would be neem oil, which will not harm the beneficial bugs. Here is more information: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
Is there a suitable treatment for yellow aphids that will not harm Monarch Butterfly caterpillars on my swan plants? Nature can be cruel, as everything I've tried so far harms the caterpillars since they are both active at the same time of the year.
I would suggest using Neem oil, which should help eradicate the aphids without harming the beneficial insects. Here is an article that you may find helpful: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
My husband loves his little friends in our garden and our garage in the country but he hasn't seen one and he always shows me one and puts them back and we joke and name them. This year nothing. I haven't the same fondness for frogs, so I said I would ask. Thank you for your time. Sincerely Mrs. Kathrine Jasek
Here is a link on how to attract the toads back to your garden!
https://www.gardeningknowhow.com/garden-how-to/beneficial/how-to-attract-toads.htm
I was perusing this site for tips on getting rid of lawn weeds. I am happy to leave them be, except if they are to attract beneficial insects to lay their eggs, can I still mow every week?
How about growing some flowers that would be beneficial and attract butterflies?
I would not avoid lawn care in order to avoid beneficial insects. It would likely attract more bad bugs than good ones.
https://www.gardeningknowhow.com/lawn-care/lgen/lawn-weed-identification.htm
https://www.gardeningknowhow.com/garden-how-to/beneficial/attracting-butterflies.htm
Are toads people friendly, as I think I previously heard?
Yes, they are. Toads pose no threats to humans, though you should always wash hands off after handling them or any animal. If you would like to encourage them to visit your garden, this article will help: https://www.gardeningknowhow.com/garden-how-to/beneficial/how-to-attract-toads.htm
Found this little guy on my driveway. Can you identify the type of lizard?
Please share a photo of the little guy and I will be happy to help you identify it!
What flowers will attract butterflies and hummingbirds?
There are lots of flowers to attract both butterflies and hummingbirds!
Here are some great articles to help you!
https://www.gardeningknowhow.com/garden-how-to/beneficial/plants-for-butterfly-eggs.htm
https://www.gardeningknowhow.com/garden-how-to/beneficial/how-to-attract-more-butterflies-to-your-garden-with-eight-gorgeous-flowers.htm
https://www.gardeningknowhow.com/garden-how-to/beneficial/butterfly-garden-feeding.htm
https://www.gardeningknowhow.com/garden-how-to/beneficial/attracting-hummingbirds.htm