I would move them to a spot where they get early morning sun and some shade in the hottest part of the day. I think any plant appreciates the early morning sun and will grow better.

Good luck,
Linda

Harryshoe, every time you post, I see your magnificent arbor of Westerland roses! Share your frustration with growers' recommended exposure tags. Agree with Linda & would move them from where they've already shown they can't prosper. Like to audition new plants in proposed garden spots still in their pots, letting the plants show me the exposure they prefer. For a new plant arriving in Spring or early Summer, may take several months as the weather heats up with more intense sun before I'm satisfied the sun/shade ratio is appropriate. Often the plants will get larger pots as needed during the tryout. Usually in September they are planted. This learning period saves me & the plants a lot of aggravation by taking much of the guesswork out of successful siting.

So I'd pot up your heuchs, as is often done for roses & hydrangeas that grow backwards, and experiment with placement to find a cozier fit. You'll also get a chance to see which combos you prefer with their neighbors. Find it much easier to shift pots for a spell than to admit I goofed, dig & replant. Advice from a lazy gardener...

Hi harryshoe. I find that heuchera, heucherella and tiarella are really more of a shade tolerant plant rather than a shade loving plant. Very few plants that growers describe as shade loving can take deep, dark shade. For instance, many people will try to grow hostas (which are often described as shade loving plants) underneath their porch or on a dark forest floor only to find that the plants soon waste away to nothing.

I grow all of my heuchera and relatives in at least morning sun. The lighter leaved varieties (such as the yellows and lime greens) will need full or dappled afternoon shade or their leaves will burn. The orange and red varieties can take a lot more sun and most of mine can take a full day's sun. The dark leaved ones actually need quite a bit of sun to grow well and are the most sun tolerant of the bunch.

I'm I the PNW (WA state) and our weather is often dissimilar to other parts of the country. This usually means that I can grow things in more sun than other people can because it's generally wet and mild here. I'm not sure what your summers are like there in eastern PA, but I'm sure your heuchs would appreciate at least morning sun.

You could try them in pots first. That way you could move them around your yard in order to find the spots where they seem happy. A word of warning, though. Heuchs get crown rot if they're too wet, so make sure your pots have great drainage and you only keep the soil damp, not soaked. I never grow my heuchs in pots here because it's too wet and they rot away to nothing in no time.

Hope this has helped you. Heucheras are worth growing and are generally an easy plant once they're situated correctly.