Ami, tilling bermuda grass only redistributes the roots, causing it to spread more rapidly. Unfortunately, the only method that has ever worked for me is to dig deep enough to get ALL the roots - or - use Roundup and continue to do so until no more grass appears. I hope someone else will have a better and more helpful answer for you. Good luck !!!!

Carrie is right. You have to just pull, pull, pull those weeds out. Weeding is a never ending job in gardening. I had a pile of mulch about a foot tall waiting to go on my beds and the burmuda still mananged to pop up in the middle. Just be diligent and it will get better. I have also learned keeping the grass mowed and not letting grass seed into the bed helps with new pieces of grass.

Also be sure your garden edging is a few inches into the soil to help keep the bermuda from invading the bed by going under the edging. Your weeds probably reseeded. On your next bed, after you ammend and till, use a preemergent weed killer, or some other means to kill the weed seeds and roots before you plant.

Believe it or not, if you keep pulling the grass/weeds or spraying them, they will go away. If you haven't, add several inches of mulch. The plants will appreciate the cooler soil and it will make it easier to pull the weeds.

When you do your next bed, might consider either using solar to kill the grass/weeds first or do a lasagne bed. If you want to solarize an area, cover it with clear plastic. Great thing to do in the month of August.

I found lasagne beds much easier although you do keep pulling a few stray weeds for a while.

I have old beds that I can't lay mulch down cause the plants don't like being covered. Just today I cleaned the bed out of weeds and grass that got away from me. It took me most of the morning to do but it's the only way to keep it out.
Gardening is work work work work, never ending. Some are easier than others. Like my never needs water from the hose bed on the size of the house, only water it gets is rain.

To start this bed I laid plastic down, covered it with mulch over the winter. By spring it still had grass in it so I took a pitch fork and dug it all up, worked like a charm. The best part was that it did get the bermuda grass.

I love St. Augstine grass. I made a new bed last year and it was easy to remove. I'd never have bermuda again. I'm still working on getting rid of it all in the yard. It's taken me 4 years to get where it's at now.

To get St. Augstine to spread I found watering it every other day worked great for me. Where it's all ST.A I only water when needed, the blades fold up when in need of water.

If you have room between the plants, try laying cardboard or several layers of newspaper down & covering with mulch;
that'll kill the weeds underneath.

Best luck!

In TX, the weeds are just as big as everything else......and just as hard to get rid of.

There is nothing worse than bermuda grass, and St. Augustine, while easier to get out, takes over about as fast, without someone keeping after it.

I never put in grass in, at my current house, until I knew exactly where I wanted it, and then I used Zoysia. Weeds.....well there's no real solution for those.

You will find that weeds grow worse, against southern or southwestern exposure walls, also, as that tends to be the most prevailing wind direction, in the summer months. So, any beds there, will require more than their fair share of attention.

Gardening in TX, has been a real chore.

There is no getting around weeding but the good news is the more you do it the less it gets. There is some grass killer that is safe to use in your beds just try not to spray it directly on the plants you want to keep but it might kill your mondo grass. Not sure. It takes a long time to work and you still have to pull it out after it dies. You have to get the roots when you weed so use a hoe or some kind of tool to get underneath and pull the whole things out. I had a ton come up in my new bed that I think was in the compost but it is getting better now. When you mow try to not let it get in your beds either if you have a weedy lawn. Once you get most of the weeds out put down thick layers of newspaper or cardboard and mulch over it and it will help a lot. The only other thing to do is take out every thing and spray with round up every couple of weeks and then replant but you may loose all your plants if you do that unless you have someplace else to put them.

Ami,
You will prevail, and the weeds will go away--or pretty much so. Just keep weeding. Don't think of weeding as a chore, but as a chance to be outside; doing something very productive that requires little thought; and getting immediate feed-back.
Next time you put in a bed (and you sound like a person who will garden more and better each year) start applying Round-up now, in late June or July, and do so every two weeks or so. Then after everything is good and dead at the end of August, till. Apply Round-up again, and till in mid-September. By the end of September, which is prime planting time in Texas, you will have a bed ready to accept your plants. There will still be weeding to be done, but much less.
Remember, gardening is a pleasure, and part of the pleasure is stretching your back, looking at the pile of weeds to go on the compost, and enjoying the fruits of your labor!

We finally gave in and put down landscape fabric and we're so glad that we did. When we moved into our house, it had huge beds but the entire yard was overrun with weeds. We pulled and pulled and thought we had them all under control, but everytime we finished cleaing up one section, the previous section was re-sprouting already! Our local garden guy told us that the fabric was our best bet and it has worked wonders. You just lay it down everywhere, overlapping as necessary, and cover with mulch. The bermuda grass underneath has not managed to come back up. The only weeds we get now are at the very base of the plants where we couldn't wrap the fabric close enough. Occasionally we get some growing in the mulch, but they can't really sink their roots so it's more like picking them up than pulling them up.

Here is a link that might be useful: Advantages and Disadvantages of Landscape Fabric

Ami, I am an old pro at putting in large flower beds. The last one was 116ft around, and the one before that was 112 ft around. This is how I put in my beds. I first outline the bed in the shape I want using garden hoses. Then I spray the bermuda grass with (purple cap) round up, when the weather is at least 75 degrees. Then I let it sit for 7 days, and then I till the yard, removing as much of the old dead bermuda grass as I can, the little stuff will turn into mulch. Then I add cow manure, mulch, compose, and top soil to the bed, and retill, until the bed is almost powder. I put 2 truck loads of mulch, and at least 60 bags of the other stuff in each bed. If you do this you will not have any problems. Then I outline my beds with windsor bricks, they are expensive, but I buy 12 at a time, so its not so bad. Then to keep the grass out of my beds, I use round up every 6 to 8 weeks, and just spray, where it looks like grass is going to go into the bed. This keeps it in check. I plant my beds full of plants, thanks to lowes cart sales, so that no weeds can get in, and if one does, its easy to pull out, because of all the mulch. It takes me about 4 weeks to put a flowerbed in. But if you do it right, then its easy to maintain. I only go to Rockport every 2 to 3 weeks, so I have time to do other things when I am there. Barbra,

Mulch, mulch, and then mulch