These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.

In plain terms: This location is in Zone 6b today. Its hardiness profile is cold winters, and coldest nights are typically around -3°F. By 2050, the projected hardiness zone is Zone 7a based on SSP3-7.0 (regional rivalry). That is a +0.5-zone shift from Zone 6b to Zone 7a by 2050.

Out of range today and still out of range in 2050.

European honeybee (Apis mellifera)

Basil is typically pinched to suppress flowering for leaf production, so flower-driven wildlife relationships are uncommon in cultivation; when allowed to flower the spikes do attract small bees.

Common eastern bumblebee (Bombus impatiens)

Non-toxic to dogs and cats per the ASPCA toxic-plant database.

NC State Extension lists Ocimum basilicum as USDA hardiness 10a-10b — perennial only in true tropics. Grown as an annual in zones 3-9 across most of North America.

Native to tropical Africa and Asia; will not tolerate frost or cold soil.

Pest pressure: aphids and Japanese beetles occasional. Disease pressure: fusarium wilt and basil downy mildew (BDM) are serious. NC Master Gardener trials identify several mildew-resistant cultivars.

Native to tropical Africa and Asia, this is a true heat-lover: growth stalls once nights fall below ~10°C, and frost damages it outright. It performs best through warm-to-hot summers; cool maritime climates without steady summer warmth leave it stunted and slow.