I have no idea what is happening. Some are good but some are basically laying on the ground. The soil is moist under the mulch.

Could it be too much watering? I do it maybe once a week if it's really dry but it hasn't been lately and it's all in the shady area.

Lack of nutrition? I did mix the local soil with organic manure compost but maybe something else is lacking.

Also, I have 2 Jack Russells and sometimes one of them pissed in that general area although not every single day. I'm planning to corner off this area with temporary fence to see it that helps.

Always assumed bamboo is like a weed and will grow and spread anywhere but this is turning out to be a really finicky plant.

By the way, this is Boston area. Thank you.