Aphids are the worst, keep an eye on them as they will spread given half the chance. A light dusting of flour does keep them at bay though I've found. We bought some lady birds in the mail (RIGHT?!) and they completely decimated our aphid problem so if things get bad thats always an option
We got some fungus gnat specific nematodes from Nematodes Direct a few weeks ago. We used them on indoor rather than outdoor plants, but has totally sorted the problem.
Aphids are the worst, keep an eye on them as they will spread given half the chance. A light dusting of flour does keep them at bay though I've found. We bought some lady birds in the mail (RIGHT?!) and they completely decimated our aphid problem so if things get bad thats always an option