US-1516 (cold-hardy rootstock-scion)

Specialty citrusAvailable

A USDA cold-hardy, disease-tolerant Poncirus hybrid sold both as a vigorous rootstock and a grow-your-own grafting base; resilient where citrus disease and cold both press.

Across the consideration criteria

How it grows

Cold hardiness
5°F
Ripening
Mid-season
Vigor
Variable (Papeda-Derived = Vigorous + Thorny)
Disease tolerance
Moderate
Drainage need
Well
Soil pH
6–7.5
Graft requirement
Graft Required
US availability
Available

Considerations

Cold hardiness5°F
TenderCold-hardy

Canopy killed at about 5°F.

Heat to ripenLow
Low heatHigh heat

Needs low heat to colour and sweeten.

Maturity seasonMid
EarlyLate

Mid-season fruit (autumn).

VigorHigh
LowHigh

variable (papeda-derived = vigorous + thorny)

Soil pH preference6–7.5
4.58.5

Prefers a pH band of 6–7.5.

These are intrinsic to the citrus. On a real property, Folia scores each against your site; here they're shown on their own.

Grows alike

similar to grow

Climate-adapted alternatives

more resilient picks

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