Basil is easy to grow, but it only grows outdoors in the summer—and only once the soil has warmed up nicely—so plan accordingly. If you're planning on making pesto, grow several plants.
How do you keep basil alive outside?
To grow basil plants outside, prepare a bed with organic matter such as composted manure, pine bark or compost to create the rich, well-drained environment that basil loves. Work into the soil approximately 3 pints of 5-10-10 granular fertilizer per 100 square feet.
Can a basil plant survive outside?
Outdoors, basil needs protection from wind and frost. Always water with care, ideally before midday, and avoid splashing the leaves. ... Basil is a half-hardy annual, so new plants will be needed each year.