Hair loss is another sign that thyroid hormones may be out of balance. Both hypothyroidism and hyperthyroidism can cause hair to fall out. In most cases, the hair will grow back once the thyroid disorder is treated.
However, watermelons need a long, warm growing season to flourish. Knowing when to plant watermelon will help you harvest a bounty of large ripe melons. Watermelons can grow in USDA Hardiness Zones 3 through 11 and need 70 to 90 days to reach maturity, depending on the variety. Soil temperatures must be at 60- to 65-degrees Fahrenheit at the 4-inch depth, or watermelon seeds will not germinate. Average air temperatures must be between 70 and 85 degrees Fahrenheit.
How to Plant. Seed should be sown 2 weeks after the last frost date. Space plants 2-4 feet apart in rows 6-10 feet apart. Melons may also be planted in hills, two plants per hill, with the hills spaced 2-3 feet apart. Black plastic mulch placed under the plants will warm the soil and speed harvest.