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.
When to plant tomatoes depends on the region you live in. Check your state or region below to find out when the best time is for you to start growing your tomatoes. When to Plant Tomatoes in ALASKA: Grow Heirloom Tomatoes in Alaska.When to Plant Tomatoes in WESTERN WASHINGTON. When to Plant Tomatoes in WESTERN OREGON.heck your state or region below to find out when the best time is for you to start growing your tomatoes. When to Plant Tomatoes in ALASKA: Grow Heirloom Tomatoes in Alaska. When to Plant Tomatoes in WESTERN WASHINGTON.