When you say 24-D, you must have meant 2-4-D, which is a broadleaf herbicide, not a fertilizer. From the pics, I see a couple of nutsedge (a weed) and a lot of Bermuda grass. You can get rid of the nutsedge w/ an herbicidde like Sledgehammer. Getting rid of the Bermuda though is gonna be tough. You could mow your St. Augstine at the highest setting and that will shade out and slow the spread of the Bermuda. I'm not aware of any herbicide that will kill Bermuda w/o killing everything else in your yard. If you could take a picture that showed a wider shot of the lawn, that might be more helpful to get a sense of what you're up against.

Your links: 2 3 I don't care what grows in the mowed part of my yard. The concern over having a lawn of only 1 kind of grass is something I don't have, and am glad I moved away from. Why aren't you asking these questions of your lawn service? And if the 'weeds' are still there, why would you continue using it? Did you tell them that's what they were supposed to do for you - get rid of the "weedy" grass?

Depends on what type of Bermuda you are looking for. You can sod hybrid Bermuda which is a better variety than common. There are some improved varieties of common Bermuda seed that you can use as well. Do you have any Bermuda in the yard already? If so, do not overseed as it is probably a sodded hybrid Bermuda. Proper care can help the Bermuda fill-in. Google the Bermuda bible if so and it will help you 10-fold. If you choose to seed, first you will either need to scalp or use round-up to kill the existing grass. Do you have any leveling issues? This would be a good time to take care of those if so. When you do seed the Bermuda, all you need is a little bit to germinate and it will spread like wild fire if properly cared for. After seeding, make sure you water enough to keep the soil moist, but not saturated. It will vary with irrigation systems, but I personally watered 4 times a day for 3-5 min. depending on the area of the yard and how it held moisture. You will have time monitor it for a few days to see how well each area of your yard retains moisture. Sod is definitely the easier/better way to go, but if your budget doesn't allow, seeding is a decent option imo. Just be ware that you will still have to deal with weeds and baby the grass until it thickens up. Hope that helps as a start...I can answer more questions if you have any.

I went to the hardware store after work today to learn about some of the supplies and see what I am going to be working with. I have a couple of questions. 1. If I were to go the grass killing route, what percentage of Glyphosate should I be using? I have seen 40%, 20% and 8%. 1a. Any suggestions on killing weeds in bush mulch beds? I am now seeing some that are sprouting. The store had some products that solely killed weeds without the grass killing label. Would general weed killer suffice? 2. If killing the grass, after the labeled amount of time is up for further lawn work to be performed, do I have to till/break up the soil with a bow rake? Or some other ground puncturing tool? 3. Seeding - what type of seed/brand do people suggest if I go Tall Fescue? This type of grass seems to be the most common, but I was a little overwhelmed (for lack of a better term) when I saw that seed bags were mixtures of seed that also included Ryegrass and KBG along with the Fescue 3a. Should I supplement the seed with a layer of hay or additional netting? (Some of the old hay and netting has not disappeared yet from the builder seed.) 3b. Since it is also mid-September, should I consider a seasonal type of seed such as a specific Fall seed? The reps at the hardware store suggested that with the season being so late (is it already?), that I should just keep my lawn the way it is and just spread whatever type of seed he was showing me at the time. 3c. What is the most optimal way to seed (could also be answered with the questions above)? Should I just purchase a spreader and apply or do the additional processes mentioned above need to be performed? 4. If not killing the grass, can I just add seed and respray my lawn with more weed kill? What brands are suggested? 5. Mulch beds - how often should I overturn the mulch? I read that at least once a season and apply 0.5-1 inch of additional mulch yearly or around that time frame. 6. Any suggestion on brand/type of spray applicator? For performing whole lawn maintenance, I was looking at the hose attachable handles with reservoirs to hold lawn care product like herbicides, etc... I could also supplement that with 1-2 gallon pump sprayer just in case. Sorry for the plethora of questions but I am still in the learning phase before I take action. I would plan to do some maintenance beginning Saturday afternoon if possible and continue it throughout the week coming straight home after work.