Do not be deceived by bright sunny afternoons at this time of year. Spring weather is highly unpredictable with night-time temperatures dropping drastically and ground soil far too cold for planting. It is important to take the long view starting with the 14 day weather forecast, particularly for temperatures.
Summer does not officially start until mid June in Belgium and while there have been a number of very warm days already, temperatures fluctuate greatly and violent weather events such as heavy rain are more likely. Night temperatures easily fall to zero or below which can be devastating for young plants.
At this time of year it is useful to move young plants outside for an hour or two in afternoons to start the hardening off process. The key factor here is to protect them from the wind which can have a serious chill factor. Done carefully, this exposure can help stop young plants becoming stringy while indoors.
Generally young plants should not be taken outdoors when temperatures are below 5 degrees F. While salad crops and other cool weather crops will manage fine even with cold nights, it is important to be careful with watering and not leave plants sitting in wet soil over night. Water lightly during the day.
Do give a thought to the birds and the bees at this time of the year. This can be a very difficult time for them with food shortages, cold nights and young on the way. Providing bird food on a regular daily basis and a water supply can make a big difference. Providing some flowers for bees is also worthwhile.
Gardeners live in hope of a good spring and early summer so to get a good long growing season. The violent fluctuations in spring weather in recent years make this unrealistic. However, with a careful eye for temperature, gardeners can get salad started and can carefully start hardening off young plants.