Here are ten things to do in the garden this weekend, none of which will take more than an hour: DRESS UP YOUR BROCCOLI: Broccoli and all members of the cabbage, or brassica, family thrive when given a shovelful of compost about this time. Dried, bagged manure works well if you don't have compost. Put it directly around the plant, bringing the compost and some dirt up around the base and burying the lower part of the stem. When applying a side dressing to cabbage, you'll have to push the lower cabbage leaves up and away to get the compost under the plant. Side-dressing brassicas serves two purposes: First, and most obvious, it adds nutrients to the soil for the hungry plant while conserving soil moisture. But, just as important, it gives the plant greater physical strength. It will thus be less likely to fall over or suffer wind damage when bearing great heads of florets. DOING DAHLIAS: Plant several dahlia tubers, plants that are at least a year old and produce far larger and more lavish blooms than dahlia seedlings. They wind up being somewhat more expensive than the seedlings, but are well worth it. They like a soil that has a great deal of organic material and is well-cultivated, which means no weeds. When you plant them, add a shovelful of compost or dry manure and mulch them with straw, leaves or grass clippings. Place a small tomato cage over each tuber or pound in a stake nearby without touching the tuber so that your dahlias will have plenty of support as they grow. Believe me, they'll need it. PLANT AT LEAST ONE OF THESE: Seeds of many annuals can go in now and for the next few weeks: sunflowers, summer squash, winter squash, melons, cantaloupes, watermelon, cucumber, carrots, lettuce, beets, radishes, beans, corn. GET OUT OF THE GARDEN AND INTO THE KITCHEN: With all the fresh herbs coming up pungent and delicious, make herb butter. It's easy. Just pick a handful of mixed herbs -- I've used combinations of tarragon, sage, oregano, basil, thyme and dill -- chop them fairly fine, and work into creamed butter. Use as many or as few herbs as you want. My philosophy is the more the better. Served over fresh pasta, broiled tenderloin steaks or fresh fillets of fish, nothing equals the first pungent herbs of spring. PICK A PECK OF PEAS: Yes, folks. No more moaning and groaning about what a bad spring we've been having. If you were on time with lettuce, spinach and pea plantings, then you should have begun harvesting some of that early stuff a week ago or more. Keep picking. If it's peas, the more you harvest, the more you'll get. They'll just keep coming on. Pull up spinach and lettuce by the roots. Harvest these last two as you need them, keeping in mind that, depending on the weather, the spinach could begin to bolt in about two weeks. PREVENTIVE PLANTING: Soak nasturtiums in water for 48 hours and plant a skinny row on each side of your bush beans. The soaking will speed seed germination, and the sowing will help keep away Mexican bean beatles. Nasturtiums, incidentally, have tasty blossoms that enliven a salad or brighten a garnish. ASPIRING ASPARAGUS: Now that the asparagus plants have finished throwing spears, let them leaf out and go to seed. This summer growth is very important to next year's production. They should be fed manure or compost and then weeded and mulched. Asparagus doesn't do as well when up against a lot of competition from weeds. Mulch with black plastic if you have a particular weed problem. PITCHING TENTS: If your fruit trees are plagued with tent caterpillars, the best control is simply stomach, just tear the nest out of the tree and burn it. OUT OF THE GARDEN AND INTO THE BOOK: Record in your diary or notebook what you've planted and where, and keep track of its progress. Also include weather conditions from week to week. It may sound like a trivial way to spend your time, but it's a very useful exercise, not to mention kind of fun seeing year to year what you did in the garden. CLIP AND SAVE this list. It'll be good year after year from about May 15 to June 15..