The Early Spring Garden

Global warming brought us some very warm early April days. The high was 87 degrees yesterday. Today was a little cooler but very sunny and comfortable. In short, great weather to be in the garden.
Typically there wouldn't be much in the garden at this time of the year. But with the new cold frames we are nearly ready to begin eating. The lettuces in this photo are the ones that I started last October and which were in my old glass covered frame during the winter. The frame is now behind the lettuce and is covered with row cover material. The frame contains Chinese cabbage, pak choi and komatsuna (another Asian green) that I had started indoors on February 11th and that I transplanted out five or six days ago. Initially the row cover material was to protect the transplants from the sun since they were hardened off only for a couple of days. But my Asian greens have often been a food source for flea beetles and so the row cover now keeps off any flea beetles. [I don't know if they would be around this early in the year.]

In one of the new cold frames I transplanted lettuce, spinach, and zen around four weeks ago. This frame is not insulated and doesn't retain as much heat as my other two new ones. One of them is pictured below.

This frame, which is insulated (the insulation is covered with black plastic to protect it and presumably absorb more heat), contains some red lettuce in the lower corner, then a group of mache (corn salad), some spinach at the top which is mostly overgrown with zen (the larger leafed plants). If you could see closer up you would see from the holes that zen is a favorite of the slugs. So far it seems that the slugs concentrate on the zen and the Chinese cabbage and pretty much leave alone the Claytonia (which is in the one cold frame not shown here), the mache, spinach and lettuce.
The red object in this photo and the black object in the photo above it are the plastic covered pieces of board that I use to attract slugs. My wife suggests that if I got up earlier in the morning I could go out and pick the slugs off the plants before they scatter to avoid the sun. She got about a dozen this morning which is more than I typically find under the boards. Where do they all come from? Since I am more of a night person maybe I should go out at night with a flashlight and pick off the slugs before they can start eating.

Having the claytonia, mache, lettuce, spinach, and Asian greens available is a result of using the cold frames. But this year we had another surprise. In the fall I planted a lot of Red Russian kale. It had been so productive for us during the year that I started some late in the season and planted them in a number of places. Then winter came before they were big enough to provide anything for us to eat. I have read that Red Russian kale is not the best variety to try and maintain through the winter and so I assumed that they would end up as a cover crop. When the heavy snow that we had in late February/early March finally melted away there were the kale plants. And here is what they look like now. They are definitely growing and I would not be surprised, depending on the weather, if we have some to eat very soon.

Extending the Season and the Challenge of Slugs

My only serious attempt to extend the growing season has been a cedar frame with a glass cover that I have used the past four years to keep lettuce in wait for growing in the early spring. Here is what it looked like two years ago. The glass cover (an old storm door window) just sits on top (see below).

The first year this worked wonderfully and in the spring we harvested quite a bit of lettuce before anything was ready from the regular garden. I think I was just lucky that year because I had no idea of when to start the seedlings and no problem with slugs. In the intervening years I didn't plant soon enough (last year) or slugs had a feast. It must be a real treat for them to have a protected, relatively warm place with delicious young seedlings to feast on.

This year I either planted early enough or the unusually warm November gave the seedlings enough time to mature. But, as a number of people have experienced, slugs and snails have had a very productive year. I originally set out 35 seedlings and a little later replaced six or seven of them to maintain the 35 seedling number. But as some of those began to disappear I discovered that slugs were the problem. I had left the black six-packs with a few remaining seedlings in the frame and discovered that slugs were spending their daylight hours under the six packs and in the grooves between the cells of the six pack. Obviously slug control was needed. I set out a piece of board with black plastic stapled to it in the middle of the seedlings and a small black plastic tray in a corner of the bed. Each day I go out, remove the glass cover and transfer whatever slugs I find into salt water. I am surprized at the number of slugs that I have removed from this relatively small area - somewhere between 40 and 50. I don't know whether they are immigating into the frame from outside, or there are eggs hatching in the soil, or there are just that many slugs there. When I go two days without finding slugs I think the battle is over but then go out the next day and find three or four more.

I have also scattered crushed egg shells around the seedlings and for the past week or ten days the number of healthy looking plants has held at 24. I don't know why I didn't do that when I planted the seedlings because I did that earlier with Chinese cabbages. What I did do initially was spread some wheat bran around the seedlings. Rumors that slugs eat the bran and die didn't work for me. The bran absorbed moisture and got crusty and needed to be removed.

As to the correct planting time for the seedlings, I just read in Eliot Coleman's "The Winter Harvest Handbook" that plants you want to harvest through the winter need to have almost reached maturity before the day length becomes shorter than ten hours. In Syracuse that would be November 8th. I started this year's lettuce on September 23rd and transplanted them into the frame around October 28th. That seems about right, although maybe starting the seeds a week earlier would be better. I recall also reading recently that September 15th is suggested.