Greenhouse Seed Starting – April 17, 2016 Update

It’s time for another look at how the seedlings are doing in the greenhouse with nothing but a heat mat and some hope. So far, so good with this method for me this year, but things are about to change.

It has been three weeks since the first video in the series, and since then we have had weather as low as -10°C (14°F) and as high as 34°C (approximately 93°F). Luckily that 34 didn’t last long, it was on a weird day when I had to keep opening and closing the door, and at some point I didn’t open it fast enough to keep the temperature down. Once the door was opened, though, the temperature dropped to somewhere reasonable quite quickly.

In the last week or so, we only had a couple of nights below freezing, and both ended up being around -8°C (about -18°F). The rest of the nights have been near freezing, but not quite making it down far enough, at least not according to my thermometer inside the greenhouse.

No matter how cold it has been, since the last video, I have changed the heat mats to turn off at 9 AM, and turn back on at 7 PM. After this video, I will be changing the evening time to 8 PM, and for now, I will leave them on until 9, but might drop that down to 8 PM if the temperatures allow it.

As for the plants themselves, the only seeds that never germinated were from the Lemon Balm and the Habanero Peppers, the rest all did great. One of the two Meyer Lemon trees even sprouted, which I wasn’t sure would happen since it took most of a month to happen, but I’m glad it did. I don’t think the ones I overwintered made it.

These seedlings might be the strongest that I have ever produced also, I haven’t had any problems with the plants being leggy, or looking unhealthy, and I have lost only one seedling out of everything I planted. That was my fault as well, I missed covering the tray up completely one night and a jalapeno pepper paid the price for it… Phew, say that three times fast. Everything else has nice thick stems and is growing a lot faster than they ever had when I’ve had them under the grow light in the house.

On April 2nd, I planted eight cells each of Kale and Spinach, eighteen of three different lettuces (more on that in a moment), six cells of Broccoli, and six each of red and green Cabbage. Out of all of the cells, everything sprouted except for one cell of broccoli, and none of the lettuce.

The problem with the lettuce might be one of two things; either my seeds are too old, or I planted them too deep.

The seeds I have for each type of lettuce are about three to four years old, and knowing this, I didn’t bother to over-seed each cell like I should have to guarantee something came up, I just planted two or three seeds in each and walked away.

The other possibility is that I planted them too deep. I’ve had some bad luck with lettuce in recent years, and I am starting to think it might be because I have been planting the seeds at 1/2 an inch deep. I have noticed that most gardeners that I follow on YouTube, or even on gardening shows on T.V. mention that they plant their lettuce seeds at a 1/4 of an inch deep, and they seem to have fantastic results.

When I plant some more later in the season here, I will make sure not only to plant it at 1/4 inch but also over seed it a bit… Unless I buy some new seed, which I just might do.

The transplanting went really well, I didn’t mash any baby seedlings with my big, stupid hands like I usually do, and the only thing that didn’t get planted were the White Alpine Strawberries. I’m going to let them get a little bigger before I put them into a bigger pot, or right out into the planter box they will have soon.

Now only the heat loving plants (tomatoes, basil, and peppers) will be on the heat mats at night. Everything else will just be left on their own with only the greenhouse for cover. I know the spinach, cabbage, kale, broccoli, and strawberries will be fine, but I am slightly worried about the mint, chives, and goji berries being left as is if it manages to get down to -5 or below. I guess we will just have to wait and see what happens.

On April 10th I planted four peas (I forgot to mention them in the video), a half row of Early Snowball Turnips, a half row of Round Scarlet White Radishes, a half row of German Giant Radishes, and I used seed tape to make a half row of Scarlet Nantes Carrots in the raised bed. The peas are situated in the back corner, with two across the back, two down the side, and the turnips and radishes are spread out in the middle with rows that are really too far apart. I couldn’t find my line making stick that I usually use, so that’s part of why the other part is I’m just really not good at eyeballing a line and making it straight for planting. Oh, and the carrots are across the front, and they will get another half row once the Goji Berries are out of the other part of the planter.

Which reminds me, a bunch of the Goji Berries from last year are coming back! I thought I had lost them since I never planted them until October in the greenhouse and by then they were so root-bound that it was hard to know when the roots ended and the soil began. So far I have five or six plants that are leafing out, so hopefully soon I’ll plant them in their spot in the yard.

I was going to talk more about the starting schedule that I have modified from Patrick Dolan’s own seed starting methods, but this post is getting really, really long, so I will save that for another time.

Thanks for reading if you did, and if you’re only here for the video, thanks for watching!

Leave a Reply

Your email address will not be published. Required fields are marked *