I'm pretty much a newbie to Heuchera. I had previously only seen the single specimen at my folks' house. I did take note that it was VERY popular with native pollinators so I am looking at getting some established here. After gawking at the photos in this forum, I'm sold! The colors are terrific....foliage and flowers. So, if I were to plan a bed, can I stagger blooming times to stretch it out for the pollinators or do they all flower in roughly the same period?
The place I have earmarked for a bed is mainly dry with harder soil. I'll add compost. I need something shorter as I'm trying to do something with the strip where all of the house meters are...so a meter reader will need to access. Don't like mowing it and too close to street for vegetables, so pollinator effort is the thrust.

BTW, would like plants from sources which do not use neonics on their plants/seeds.

UrbanWild so glad you have an interest in Heuchera. My experience with meter readers is that they are on a schedule and don't want plants in there way. Also, they hate anything that will get them wet as they slide in to read the meter. I have had notes!!!! Maybe fine not seeing the area.
Here in the PNW my heuchera bloom from late spring into early fall but I have quite a few varieties. My hummers just love them but I don't grow them for the flowers, the foliage during winter is wonderful here. The flower stems are kind of fragile so they might get broken in your meter area. They like well draining soil so keep that in mind.
In the country gardens and Gifts is a great source, he sends nice plants and I believe they have a special now buy 2 get one free. I will have to read up on neonics so I can't answer that question.

Santa Rosa Gardens does not use them. Bloom time depend on what plants are in their background.

This is an old thread but this is so good info.
The thread "Heuchera Trials 2012 - 2014" in Heucheras forum

This is the strip we want to convert to a bed for pollinators. It is on the South side of the building but within about 12-14 feet of another 3-story building so depending on time of year/time of day, may not always get direct sun. It is a trapezoid which runs about 24 feet long on the longest (southern) side, and 18 on the northern long side. The strip is 6 feet wide.I will have the opportunity to plant even medium high plants near the meters.

Will Heucheras grow early enough to interfere with the bulbs of spring ephemerals like crocus, daffodils, etc?

Heuchera are mostly semi evergreen and do not die back for the Winter, so I would not plant bulbs to close. Also give the soil really good drainage they do not like wet feet.