Greenthumb, I'm pretty sure I have extra edible dandelion seeds (well, I know they all are, but these ones are "selected for taste" from a seed company :) Let me look to see if I have anything else on your list. I may have some potato leaf tomatoes. My seeds are next door. I'll have a look tomorrow, girlgroupgirl

HU-120274311 I wouldn't worry about the fact that the dandelions went to seed. There are seeds everywhere, whether they come from your lawn or a lawn half a mile away. An interesting fact is that the best time to kill dandelions is after they have gone to seed. The plant expends so much energy producing the seedhead that it is left weaker and more vulnerable to the herbicide. Also, many spring dandelion blooms can be avoided by using a herbicide in the fall to kill off the dandelions actively growing in the lawn at that time which will prevent them from being around to bloom in the spring.

This weedy thing can really self-sow with abandon if you have it in or near your yard, and can take over if you let it go to seed. It is able to grow with virtually no summer water, and will germinate even in the middle of summer. My advice would be to eliminate it before it takes over, if you have it in your garden. The long tap root is very deep, and will resprout if not completely removed.

What your neighbor has is Poa Annua or Annual Bluegrass. It is an annual that germinates in the fall and dies around May, that is why it has gone to seed. There are no selective controls for this as it is a type of grass. You can put out pre-emergent in Sept to stop the germination but be careful if you are also planning to aerate and seed as the pre-emergent will stop all grass seed from germinating.