P. somn. is a annual , it's very easy to grow and will be well worth your time
the only problems with PS is they grow slow at first so they usualy require some weeding , suspectible to some fungal infections, the pods will also mold fast in a humid and wet climate , most say they dont transplant well (I have not seen this, but I baby my garden)
One intersting thing about PS is its light schudles are reverse of most plants being that they flower durring the longest days, and fertlizer requirments are almost backwards of most plants they like lots of P durring groth and N at flower
for 3.00$ a packet you cant go wrong