I am mainly just going for the coolest looking plant/flower types including mushrooms.
Any suggestions?
For looks, I like combining Dragon's Tongue and Lavander. I love the combination of purple and orange/yellow in this case.
I know I found another good combination, but I can't recall right now.
I just wish the flower beds were more packed together and more in number.
Deathbell, Nightshade, Dragons Tongue, Yellow Mountain Flower... but mainly Deathbell for me.
Can you plant those glowing things you collect during the Dawnguard MQ? Those would look pretty cool.
I always buy whatever Sophie sells, adopt her and plant what she sold me. Mainly mountain flowers. After planting everything she sold me I use any room I have left to plant wheat and snowberries.