Irrigation adventures and something else we wish we hadn't planted

We've spent the last couple of days working on (and being frustrated by) the irrigation system. When we first moved here, the landscape designer we consulted suggested that we run one line for trees, one line for shrubs, and one line for pots. This system would work well if we didn't also have to consider watering needs of annuals, perennials, and vegetables.
In an attempt to coordinate watering depth needs, we're trying the following this year:

Program A is for pots, and runs for 5 minutes once a day in winter, up to 3 times a day in the heat of the summer. We've found some mini-sprayers that generally work well, but need to be replaced periodically as the holes get clogged with mineral deposits.
Program B is for shrubs, including roses, and runs 2 gph drips for 2 hours, once a week in winter, increasing to 3 times a week in summer.
Program C is for vegetables and annuals/perennials, and runs for 10-15 minutes daily to weekly, depending on the temperature and whether there are new seedlings or established plants. We haven't found an ideal delivery system yet; we've tried various kinds of sprayers and soaker hose, none of which have watered as evenly as we would like. This year we're trying a couple of new things. For the raised beds, we've added a conversion kit to our existing lawn sprinklers that has a kind of mini-bubbler, and in the vegetable garden, we're trying a different kind of soaker hose.
Program D is for established trees, which need to be watered for more hours less frequently.

Once we figured out how to program this into the irrigation timer, we also needed to make changes to our existing system. We didn't get as far as we would have liked in this process, because we also had to trace down the source of several leaks in the current system which were putting large quantities of water where we did not want it...wasting water and money!

Another distraction/complication.... the water leveler in one of our ponds stopped working, and upon investigation we found that it was clogged by umbrella plant that had outgrown its pot and wrapped its tentacles around the float valve. Umbrella plant is an attractive pond plant, but is very difficult to keep in check. It outgrows its pots and puts down dense mats of roots that must be periodically trimmed. Unfortunately we did not do that as frequently as it is apparently needed, so dealing with the problem involved a wrestling the heavy pots, a power saw to cut the roots, accompanied by some mild cursing.