Well drained soil is absolutly essential for a happy, healthy basil. During the growing season, most basil plants prefer warm temperatures (above 55 at night) and moist, well-drained soil as they tend to perform poorly in cold, wet conditions.Basil is somewhat forgiving about soil pH (acidity and alkalinity) and will tolerate a range of about 5.5 to 8.A local nursery professional or university extension agent can help you determine if the soil conditions are right for your plant.f planning seeds outdoors, wait until late spring when temperatures are above 60 degrees. You should be able to harvest green leaves from seed in approximately six weeks. You should not harvest your plant until it is at least four inches tall with a minimum of six mature leaves, but donât take more than half of them.
The warmest month of the year is July with an average maximum temperature of 80.10 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 5.00 degrees Fahrenheit.
CLIMATE OVERVIEW : Dover, New Hampshire, gets 46 inches of rain per year. The US average is 39. Snowfall is 50 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 80. On average, there are 198 sunny days per year in Dover, New Hampshire. The July high is around 81 degrees. The January low is 14. Sperling's comfort index for Dover is a 41 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54.