Cestrum Nocturnum Night Blooming Jasmine Knight Stock Photo 759184132 Shutterstock Potted Plant Same Day Delivery or Pickup Publix Tips for Sowing Seeds in February (Even without a greenhouse) Although temperatures are still low in February and there is still a good chance of frost! sowing seeds in February Myth: Terrariums are high maintenance. Truth: They're literally designed to take care of themselves. Once it's built right, a closed terrarium recycles its own water. You might water it once a month.