One lily stem got completely broken off and I see no green, will the plant sprout a new stem?

Hi Keith-- your bulb will not put up another stem this year. It might if there is another nose on the bulb but more likely not.

In cases where the stem doesn't break completely off (for example, it partially breaks and bends over) you can splint and tape it. Many times I have had stems repair themselves when I treat like this.

I've noticed little white specks or little white bugs on some of my plants. What are they and how do I get rid of them?

Hello TraceyMc,
On which plants are you seeing these white specks or bugs? Are they lilies? If the plants are outside in the garden my first solution would be to shoot the bugs off which a strong spray from the garden hose. That usually works. Check again in a day or two and repeat the process.

Edited: Oops, I hit the 'finished' button too quickly.

If these are houseplants, put them into the bathtub and give them a shower to knock off the bugs.

I agree with Greene. hose spray works great. its great for aphids! I use this technique on most of our plants, but specifically on our roses. brace the stem/leaves with your one hand, and a gentle spray of the hose with the other. no more aphids. this must be repeated as needed, but it works and you don't have to use chemicals. works best if done in the morning, giving the leaves plenty of time to dry ASAP.