Spring has sprung! (well almost)

This lettuce is from Johnny’s called All-Star Gourmet Lettuce mix coming in the greenhouse.

In celebration of my FIRST CROPS coming up in the greenhouse, I’ve changed the background color on my blog back to green from winter blue. In my mind, winter is over although not officially – that won’t take place till the first day of spring on Spring Equinox on March 20 and of course we can still (will) get snow. No matter. I’m ready! I’m moving on and planting stuff (in the greenhouse). What kind of stuff? Read on to find out!

These are a golden yellow pak choi (shakushina) from Kitazawa. They’re already a great yellow-green color and will make a wonderful contrast to the tatsoi.

These first crops took about 12 days to germinate-they actually came up on March 1 so they were planted on Feb 17th. They are all still tiny but coming up nicely. The top picture is a lettuce mix from Johnny’s called All Star Lettuce Mix that’s suppose to grow out evenly. The second picture is a golden-yellow pak choi (shakushina) from Kitazawa. Also from Kitazawa are Pak Choi rosette (tatsoi) and white stem dwarf pak choi (both not shown). These were all recommended in Elliot Coleman’s book, Four Season Harvest (except the golden-yellow pak choi which I couldn’t resist because of the color). According to Elliot Coleman they all do well in cold greenhouses. I have winter weight row cover over them now to protect them at night. I also planted Winter Bloomsdale spinach from Southern Exposure Seed Exchange at the same time and it’s coming up way slower but the first 2 seedlings broke ground yesterday, on March 3.

Ah, spring has sprung-and we got rain this week! What could be better?! I’m also going to plant transplants this week to see how they do in comparison to the seedlings. I’ll get pics later on that one.

Early Spring Planting-Three Important Factors

Feb15

Three important factors should be considered before planting seeds in early spring:

Amount of daylight hours-In the winter the sun is weaker in the northern hemisphere and we have less daylight hours. If you plant seeds too early either outside or in a greenhouse, the seedlings will be spindling when they germinate. Once we have 10 hours of daylight (we currently have over 10 hrs), we can start planting our cold hardy seeds. So in Santa Fe, we now have enough daylight hours. But wait, there are several more factors we need to consider before we plant seeds.

Soil temperature for germination for different vegetable seeds

Soil temperature-If you are thinking of planting OUTSIDE, forget about it, your soil is probably frozen so of course you can’t plant anything! Even if it’s not frozen, it’s probably still too cold to plant outside. However it will warm up soon. How can you tell what temperature your soil is? You’ll need a soil thermometer. I prefer a compost thermometer that is about 18″ long so you can check both the soil and a compost pile. A soil thermometer is invaluable, as different veggies like to germinate at different soil temperatures. Insert it about the depth of the root zone of the plants, about 4”-6″ in the soil to see how warm it is. Notice the chart above gives an optimum range for each veggie. If you have a cold frame, hoophouse or greenhouse your soil is probably much warmer already. So are you ready to plant? Not quite. There is one more factor to consider.

Air Temperature-The air temperature is also important and is the main thing people think of in considering when to plant seeds. It’s too cold at night to plant most veggie seeds outside or even in a greenhouse without extra protection BUT there are some wintergreens that are very cold hardy, some even hardy below 32°F at night. Even in an unheated cold frame or greenhouse, the temperature dips below freezing at nights so if you have a one, I suggest you put some row cover (winter weight-.9-1.0 mm.) over your beds. If you don’t have a greenhouse and will be planting outside in early spring, definitely put row cover over it at night but don’t forget to check your soil temperatures too.

I’ve compiled a list of these very cold hardy crops that can be started in a greenhouse now if the soil temperature and daylight hours are good. Many of these cold hardy crops can be planted outside as soon as the soil warms ups in March. For the list go to my blog at: http://giantveggiegardener.com.