Looks like Epilobium ciliatum to me. It is a common weed (but native!) that likes moist, shady areas. What you are referring to as "shoots" are actually the sprung-open seed pods -- you can see a few bits of the fluff that are attached to the seeds still hanging on in your photo. Here's a photo from CalPhotos showing the opened seed pods: E. ciliatum More info about the species here.

Deciduous rhododendron. It's just finished blooming - you can see the long slender wiry part of the flower (pistol) leading down to a wider green part where seeds will develop (ovary) and form a seed capsule. Many have lovely autumn leaf color as well.

We have a couple of red crinums but had no idea they would get that big. Carol and Ricky, Thanks for your prompt response.

It looks like you have a healthy dose of Needle Rush. Enjoy. A helpful place for pond info is Pond Know How