A hydrothermal vent is a fissure in a planet's surface from which geothermally heated water issues. Hydrothermal vents are commonly found near volcanically active places, areas where tectonic plates are moving apart, ocean basins, and hotspots.
When to Set out Tomato Plants. The best time to set out tomato plants is after danger of frost, which is usually anytime in April, May or early June. If you started seed indoors, the seedlings should be about 6 to 8 inches tall and hardened off before transplanting outside.
âDonât rush the seasonâ is the saying about tomatoes and cold weather.Tomatoes do not like damp, cool soil.They are injured at 41 degrees F. The ideal temperature range for tomatoes during the growing season is 65 to 70 degrees F. However, tomatoes will give acceptable results when the temperature ranges from 50 degrees F at night to 85 degrees F during the day.