Shares & Saves. Save. The British thermal unit, or BTU, is a unit of energy, one that is used to quantify the heating and cooling power of, water heaters, air conditioners and similar equipment.hares & Saves. Save. The British thermal unit, or BTU, is a unit of energy, one that is used to quantify the heating and cooling power of, water heaters, air conditioners and similar equipment.
Winter squash includes acorn squash, spaghetti squash, butternut squash, delicata squash, hubbard squash, kabocha squash, turban squash, sweet dumpling squash, and of course all types of pumpkins. Prepared winter squash also freezes well and keeps for about 6-8 months in the freezer.
The butternut squash growing season is about 110-120 days for fruit maturation, so if your season is short, itâs best to start your seeds indoors to give them a head start. To grow butternut squash indoors, youâll need to start about six weeks before the last frost in your area.he butternut squash growing season begins when all danger of frost is past and the soil is well warmed by the sun, about 60 to 65 F. (15-18 C.) at a four inch depth. Butternut squash plants are extremely tender and the seedlings will freeze with the slightest frost and seeds will only germinate in warm soil.