The perforation on drain pipes should be at the bottom of the pipe when layed in the ground. The size of gravel won't matter as far as concern for the hole size when the holes face down as they should. The collecting water should make its way through the gravel to the bottom of the trench. As it rises in the trench, it will then make its way into the drain pipe via those holes that should be on the bottom, and then the water will follow the track of the pipe. Most likely you drain pipe will have two series of holes. When you install the pipe, simply lay those holes towards the bottom but in a way that both lines of holes are slightly offset from the center and are equally accessing the BOTTOM of the trench technically the gravel in the bottom of the trench. If still you are concerned about gravel getting into the drain, you can wrap the drain pipe with poly mesh netting. Those holes must be to the bottom of the drain in order for the drain to function properly. Also make sure you obtain the proper slope for your drain pipe when you install it. Good luck.

A picture would be worth a thousand words here. Bringing in soil might be good if you suspect the original soil has been washed away for some reason. Some trees will react to hard soil by sending their roots out at the surface. Then as the tree ages, the roots become larger and expose themselves above the surface. If that is what has happened, then adding soil on top of the natural grade will cause you drainage problems and could cost you extensively if water pours into your basement (worst case). Adding soil should be done with considerable forethought as to the consequences. Another thought on adding soil is to keep it lower than the root bark on the trees. Tree roots flare out from the base of the trunk. If you bury the root flare completely, then you are burying tree bark. Tree bark will often rot when it is below the soil level. It is best if you leave some root flare above the soil level to be sure you are not burying tree bark. Tilling is a bad idea for many reasons. One of the obvious ones is that you have roots everywhere. You can't till tree roots. A much less obvious reason is that tilling destroys soil structure by fluffing it up. Once it is fluffy it has to settle again. That process takes 3 years. When it finally settles it will settle unevenly leaving your surface bumpy. Grass seed should never be mixed in with surface soil. It always goes on top of the surface. Many people recommend "scratching" it into the surface but that is not necessary. Nor is covering it with straw. All you need to do is loosen the soil at the surface (1/16 inch deep) before you apply the seed, then apply the seed, and finally roll the seed down with a water filled roller (rented). Seed should remain at the surface. If you insist on straw, as goren said, be careful not to use hay. Hay is forage for animals and has seed in it. Straw is the left over after the seed is threshed out. New seed must be watered 3x per day at breakfast, lunch, and dinner for about 10 minutes. The idea is to provide enough consistent moisture for the seed to swell and open (germinate). Unfortunately these are the exact conditions that crabgrass seed needs. For this reason grass seeding is most successfully done in the fall after crabgrass has stopped germinating. Also grass sprouted now will have weak roots that cannot stand up to the summer heat and dry weather. That might not be that much of an issue in your area. Don't assume you have clay. Fill a mayonnaise jar half full of dirt. Then fill the jar completely with water and a drop of soap. Swish it around and let it settle. You will see rocks and sand settling immediately to the bottom of the jar. In an hour all the silt will have settled. At that time if you have clay, the water will be cloudy. Let it sit another day and see if the water clears up. If it clears then you do not have clay. Clay will cloud the water for days and days. There are several conditions of minerals that cause soil to seem to be clay when in fact there is no clay at all. Don't be too surprised by this. Adding gypsum without doing this test and a soil chemistry test can be a mistake. I disagree with goren on mowing height. The only grasses that need to be mowed lower than 3 inches are bermuda, centipede, bentgrass, and some zoysias. Kentucky bluegrass (which you can't grow in shade) should be no lower than 3 inches. Fescues and all the other grass types should be mowed back to 4 inches. Usually this is a mower's highest setting. Grass grown in the shade needs to be longer simply so it can photosynthesize. Can you post pictures showing the tree roots and one from a distance showing the trees with the canopy?

Hi Greg, No, just the back yard, and I could hardly be more pleased with it. What a difference! Far and away the most successful seeding I have ever done, all thanks to this forum. I would do the same again in the front yard this year, but there is just too much shade for KBG. But that's OK, I think fine fescue can be very nice if it doesn't get too much traffic. I'm reluctant to even say this because it probably sounds preposterous, but I just noticed some Poa actually PUTTING UP SEEDHEADS today in a relatively shady area. Very, very few, but they were unmistakable. That said, I have some brown spots in the sunnier area of the lawn where Poa was in the spring, so I am hoping those spots are the Poa cooking. Paul

In a effort to be clear I have rewritten my post about Dr Ingrams. I have used contemporary language to the best of my ability. If there are still questions of what I am saying I will attempt to try again... Im tired of people messing with Dr Elaine R. Ingrams. Dr Ingrams be working hard, real hard. Dr Ingrams got courage and character just like Superman. Dr Ingrams, that girl know about her compost tea (dirt too!), she in the front row (snap) sitting on the corner. Dr Ingrams was telling people to geek up their compost tea. Somebody found out she was doing wrong and put it in the funny papers. You know everybody seen that! Dr Ingrams jumped up and told everybody they were right with the quickness. She covered that butt and dont care what nobody say behind her back. People be talking about they be calling Dr Ingrams all the time. I bet they be calling her when she get off work too, and she talk to them anyway (hmmph). I am NOT having no talking about Dr Elaine R. Ingrams behind her back just so you can stay stuck on stupid. Dr Ingrams is a real nice lady and helps everybody, even if they talk funny to her. Dr Ingrams take them just like they come, she dont pick and choose. If you wants to talk about somebody with me you best be picking somebody else. If not, you can talk to the hand Blutranes