Plants

grapefruit

Citrus × paradisi Macfad.

Family: Rutaceae · Genus: Citrus

Secondary I Medium No biomass production

Medium-stratum citrus in syntropic systems. The Bosque de Niebla Guidebook lists grapefruit in the Secondary phase of the medium stratum, alongside orange, lemon, lime, and soursop. Large bittersweet fruits rich in vitamin C; moderate-sized tree.

Götsch succession

Götsch stage: Secondary I
Ecological role: Late secondary
Primary stratum: Medium
Strata: Medium, High
Biomass class: No biomass production

Environment

Light requirement: Full sun
Water requirement: Moderate
Drought tolerance: Moderate
Waterlogging tolerance: Low
Soil pH range: 5–6.5
Preferred soil texture: Loamy, Sandy
Hardiness zones: 9–11
Frost tolerance: -4.0 °C

Morphology

Mature height: 5–10 m
Recommended spacing: 5–7 m
Root system: Taproot
Root depth: Deep
Growth rate: Moderate
Lifespan: ≥ 30 years
Time to first harvest: 48 months

Biomes & climate

Atlantic Forest Naturalized

Köppen classes

Humid subtropical (Cfa) Suitable
Subtropical with dry winter (Cwa) Suitable
Tropical savanna with dry winter (Aw) Suitable

Where it fits in a guild

Grapefruit takes the Medium stratum in the Secondary I phase of succession — in a guild it shares the line with species from the other strata, each harvesting light at its own height, in its own time.

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🪴 Cultivation

A moderate-sized tree, a little more vigorous than orange; well-drained sandy-clay soil, pH ~5.0–6.5; sensitive to waterlogging. Grapefruit's cold tolerance is similar to that of sweet orange. Spacing 6–7 m × 3–4 m; grafted tree. Large, late-maturing fruit.

📅 Phenology

Flowering months: September, October

Fruiting months: June, July, August, September

❓ Frequently asked questions

How long until the first harvest of grapefruit?

The first harvest of grapefruit comes around 48 months after planting.

What spacing is recommended for grapefruit?

The recommended spacing for grapefruit is 5–7 m.

How tall does grapefruit grow?

At maturity, grapefruit reaches 5–10 m tall.

When does grapefruit fruit?

Fruiting of grapefruit occurs in June, July, August, September.

When does grapefruit flower?

Flowering of grapefruit occurs in September, October.

What stage and stratum does grapefruit occupy in a syntropic system?

In a syntropic system, grapefruit belongs to the secondary i stage, occupying the medium stratum.

Functions

🍎 Fruit 🐝 Attracts pollinators 🍯 Melliferous

Propagation

Grafting

Citations

Bosque de Niebla (2019) — Syntropic Farming Guidebook, Consortium Design 2019 , p. 40 (primary_stratum, gotsch_stage)
www.infoteca.cnptia.embrapa.br (root_system, root_depth, ph_min, ph_max, spacing_min_m, spacing_max_m, soil_texture_preference, cultivation_notes, waterlogging_tolerance)
hgic.clemson.edu (frost_tolerance_c, hardiness_zone_min, hardiness_zone_max)