We have an insect tolerant garden. When I see tiny holes in soft green leafy plants, I assume beetle, but rarely figure out what kind because beetles move so fast. More than half of the Morning Glory leaves have these distinctive beetle-holes in them. Well, this morning, one of the culprits was visible so I could research it and learn about it. What's that bug says it is Charidotella sexpunctata, sometimes called a Gold Bug. Both the larvae and adults eat the leaves of Morning Glories. Scarabogram gives more information online - a 1994 article by Louise Kulzer . The golden tortoise beetle is a stunning, vibrant metallic gold color. It has a magical quality, not only because of the brilliance of its color, but also because the brilliance isn't permanent. Metriona can alter color within a short time period, turning from brilliant gold to a dull, spotty reddish color. The gold color also fades when the insect dies. What controls the color while the insect is alive is an intrigui...
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We are only recently zone 7. NE Oklahoma was zone 6b until about 10 years ago when it heated up to 7a.
But we still have horrific ice storms, spring blizzards with 18-inch snowfall, etc.
I bet most of those plants are worth trying. Dr. Miller puts solid fences on the north side of his plants to protect them from north winds.
Keep me posted on what you try!