How and When to Water Grass Seed
Grass seed! It seems like it could be very tricky stuff to get your grass seed watered and growing, especially if you search the internet for advice. Which is what I did when I decided to try to get my thinning grass in our new little garden to thicken up, and get my empty spaces filled in. It seems like nearly every gardening site tells you something different. To make matters worse, some of them were grass-type specific and I had no idea what type of grass seed I had because the box simply didn't tell me. So I had to just try it and see what happened. I did it once, twice and three times since the start of May and these are my results (my grass is now thick and lush with a gorgeous shade of green, btw!)
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1. Gentle watering!
Your grass seed is not rooted right away so you don't want to pour or splash water down on it or it's gonna go swimming somewhere else. You could use a sprinkler I suppose, but I don't have one and my garden is quite small (30 sqm) so I just used a watering can with the shower/sprinkler thingie on the end of the spout. A light watering this way is all you need.
2. Quickly, no hovering!
You want to keep your grass seed moist because if it dries out it will die out -- but you don't want to drown it cos the same thing will happen. Even in 90 degree weather, all I did was water lightly and the watering can never hovered for more than a second. It was always in motion. If you do more than this it could make the ground too wet. Mind, if you've got massively dry soil you'd need to water a bit more, but if your soil is normal, do not soak it to bits!
3. Keep it moist
If the day is very hot I would make sure I watered at noon because by then the ground was getting pretty dry. If it was hot in the evening I did it again. But you have to be careful you don't water too much if you're watering twice a day. Most people will tell you to water at night and water deeply -- this did not work for me at all, but if it works for you, go for it.
4. Mind the ground layout
If you've got areas that dip and collect water, be very careful you don't end up with puddles cos they will drown your seed. You'll have to play around with your watering style until you figure out a way to water without it running off. Also, if part of your garden is in the shade all day it'll probably need less water than the side that bakes in the sun all day. Incidentally, in the case of my garden, the shadier side grew about twice as fast as the sunnier side.
5. Keep watering the same way until all the seeds sprout.
The seeds will start to sprout soon enough but they won't all grow at the same time. You need to be consistent until all of the seeds have started to sprout.
6. If you start growing seeds in the middle of a hot spell, you might need to continue a similar watering style until the end of the summer.
This is because some experts say that if you stop doing so, the grass will think it's time to hibernate. Now, I don't know if this is true or not, but I have continued watering my garden every day at noon just to keep it nice and green. I water less than I watered before and if it rains, obviously I don't water that day.