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.
Calais, ME Weather. Calais, ME climate is mild during summer when temperatures tend to be in the 60's and extremely cold during winter when temperatures tend to be in the 10's.