Sprouting seeds

The columbine seeds I planted in the new garden beds in the patio have sprouted, and some of the flower seeds in the greenhouse have newly sprouted, such as balsam, white cosmos, and sweet pea. I am having a slug problem in the greenhouse. We killed four in there yesterday evening! They have destroyed some broccoli and sunflower seedlings. I still haven't had a chance to test my drip system in the greenhouse. The weather was so dismal last week that there was no need to water. This week does not look much better. It's been rainy and in the 50s with more of same to come.