It probably won't affect the seeds, but it is too cool to apply all that N right now. Most spring fertilizer drops in the northern portions of the US should be around the end of May. It is pretty cool where you are now, so all that nitrogen (if it's quick acting) will be somewhat of a waste. Nitrogen leaches out of the soil rather quickly with frequent rain and watering, plus the grass isn't growing fast enough to use it all anyway. Providing nitrogen is somewhat misunderstood by most people. Nitrogen forces growth, but forcing growth at the wrong times can have negative effects on your grass. Some would even say the spring feeding isn't really necessary since it can take away stored carbohydrates that grass needs to get through the summer. Since you are in Canada I imagine this is less of the case since your summers tend to be shorter and less severe. Here is a good little write up on grass physiology. Hope it helps.

Ah, I missed the point. A clarification: 'stay' on top of the soil, in that (using my example) those nutrients are not 'leaving on the truck' like they would with a cash crop. No, they'll stay right there, on the lawn. While staying right there, they're susceptible to washing away, or leaching, or just staying there. But the point is, what you don't need at that point is to be adding more. While it's not true that every speck of excess (more than the lawn crop will use) phosphorus will wash away (or leach), it is true that the creation of the excess is what allows, even causes, the problem. So we don't need to be adding more phosphorus. There's enough there, right now, on that lawn.

Well, think about it a minute. If you are going to put down an "organic" fertilizer such as alfalfa meal, it takes time for the alfalfa to break down into something the plant can actually use. So early is okay, because it's going to be a while before the plant can use it. The stuff might not break down for a long time depending on your climate--how moist, how humid, soil temperatures, etc. On the other hand, if you are putting down a fast-acting chemical fertilizer like for example Miracle Grow, it is going to work right away--does it need to work right away in early March? Maybe not. And then there are slow-release chemical fertilizers, Osmocote being an example. Osmocote is temperature-sensitive as far as the release goes, so if the soil is still fairly cold, nothing is going to happen for a while anyway. So if you are time-pressed later on in the spring, you might get it done now and be done with it. Something else to take into account is the weather and your climate. If more frosts or snow are expected, of course wait. Don't worry too much about the exact right time. After you've been gardening a while, even getting around to putting down some fertilizer is a major accomplishment. ;^) If all else fails, read the directions on the package. They are usually pretty good.

hi there! i've been lurking lately too - i'm an old GW user from our first build 5-6 years ago but we're starting over in a new city so i thought i'd throw some lurker love your way. i think the plan is great. the way your foyer opens into the great room reminds me of my very favorite space on houzz in portland. i'm linking to it below. i'm assuming you want people to throw out ideas and play devil's advocate to point out things maybe you hadn't considered? so here goes: 1) do you have a nice view off the back of the house? and is your porch going to be covered with railings? i ask because the view when you walk in the front door is going to be directly out onto your porch. that might be intended and ideal if your porch layout is beautiful. if it's not, i love walking in through the front door and seeing a beautiful fireplace straight ahead. so you could flip the fireplace to the back wall and have doors flanking it out to the porch. 2) i can't tell what that projection is on the exterior wall off your office/bedroom. i'd just make sure you have a nice spot for windows to let some light into that space. 3) if budget is a concern at all, a private entrance full bathroom in the office seems excessive. also, if there's a chance you'll ever add a pool, you might want easier bathroom access from the outside so might be worth considering relocating that full bathroom somewhere more like where the pantry is? 4) looks like the kitchen is a great size, so i'd just make sure you have plenty of space between the angle where it hooks down and the back run of cabinets. looks a pinch tight right on that corner. we're making sure we have at least 4' around the island and for any hallways and walkways. 5) i like the look of all the separate cabinet runs, and we had that in the last house we built. BUT, i found the detached cabinet runs just collected junk and were never used for "kitchen" functions - prepping, cleaning, eating etc. they were clutter magnets. again i can't read the dimensions of the kitchen, but with all the pantry storage you probably don't need the extra cabinets. have you thought about removing that wall and keeping the kitchen open to the dining room? 5) i would try to get at least a small linen closet into your master bath close to the shower. best of luck as you get started!! Here is a link that might be useful: [Portland House I Love on Houzz[(https://www.houzz.com/photos/cottage-in-the-trees-traditional-portland-phvw-vp~396027)