Troyer Citrange
What's special about Troyer Citrange
Sister selection to Carrizo; classic cold-hardy rootstock.
Growing this variety
Troyer Citrange follows the same growing basics as Specialty & Hybrid Citrus. Variety-specific maturity above; everything else below applies to the whole Specialty & Hybrid Citrus family.
Germination
Spacing & depth
How to plant
Best grown from a grafted nursery tree for true-to-type fruit and faster harvest. From seed: use fresh seed, plant 1/2 in deep in a well-drained mix, keep 75–85°F and moist. Transplant to a sunny, well-drained site sheltered from cold winds, or grow in a large container (15+ gal) that can be moved indoors below 30°F.
Grower's tip
Odd and cold-hardy citrus crosses — many were bred as ornamentals, rootstocks, or novelty fruit. Poncirus-based hybrids are the cold-hardiest edible citrus.
Soil preferences
Deep, well-drained native soil. Avoid amending the planting hole heavily — roots should learn to grow into the surrounding earth.
5.5–7.5 depending on species (conifers lean acidic; most hardwoods neutral).
Top-dress with compost and mulch in a wide ring; don't backfill with pure compost.
Watering
Deep soak weekly the first two years while roots establish; taper once the tree self-supports.
Slow trickle at the drip line, not the trunk. A 5-gal bucket with a pinhole is ideal.
Overwatered: yellowing, root rot, mushroom collar. Underwatered: leaf scorch, early leaf drop.
Prefers top-watering — Trees are always top-watered — deep slow soak at the drip line, never at the trunk. Bottom-watering only makes sense for nursery seedlings.
Temperature tolerance
Broad — most species tolerate 40–90°F once established
Down to species-rated USDA zone minimum
Hardy once established; young seedlings need protection their first winter.
Special germination requirements
Most temperate tree seed needs cold stratification (30–120+ days at 34–41°F) — see each species entry for the exact time.
Container growing
Possible with the right cultivar
Deep tree pots (root trainers) for the first 1–2 seasons; permanent site required for full growth.
Only dwarf, patio, or bonsai forms live long-term in containers.
Detailed harvesting
Not applicable for ornamental/timber trees. Nut and fruit species — pick when they drop naturally.
Post-harvest storage & preservation
Nuts: keep damp and cool, sow promptly. Winged/coned seed: dry, cool, dark in a sealed jar.
Culinary, medicinal & other uses
Shade, windbreak, wildlife habitat, timber, ornament, and long-term carbon storage.
Medicinal or traditional uses are shared for interest only — this is not medical advice. Consult a qualified professional before using any plant medicinally.
Seed saving
Wind- or insect-pollinated; seedlings rarely match the parent exactly (especially named cultivars — those must be grafted or cutting-grown).
Not practical for trees. Expect variation.
Collect fully ripe seed in fall, clean, dry or keep damp per species, then cold-stratify before spring sowing.
Your zone's planting calendar
Pick your USDA hardiness zone and we'll estimate the key dates for specialty & hybrid citrus in your area. These are regional averages — always check your own last-frost forecast before sowing.
My Troyer Citrange Specialty & Hybrid Citrus notes
Troyer Citrange Specialty & Hybrid Citrus seeds on hand
Track packets and loose seeds you already have. Private to your account.
Par level — leave at 0 for no alert. Anything below par shows on Seed Starting and your shopping list.
From your kitchen — grow specialty & hybrid citrus from what you already have
Trees usually mean patience — collect fully ripe seed in fall, clean pulp off, and give most species a cold winter (real or in the fridge) before they'll germinate.
- 1Collect ripe seed/nuts/cones in autumn from a healthy parent.
- 2Clean off any fleshy pulp; dry cones warm to release seed.
- 3Cold-stratify in a bag of damp sand or peat in the fridge (34–41°F) for the time listed on the species.
- 4Sow in deep tree pots and grow on 1–2 seasons before planting to a permanent spot.
Storage: Most tree seed keeps 1–3 years cool and dry; oak/hickory/chestnut nuts must stay damp and be sown promptly.
Order more seeds
Running low? Reorder from one of these seed stores.
Loading…
Other Specialty & Hybrid Citrus varieties
Oroblanco
Pummelo × white grapefruit — sweet, low-acid, thick pale-green rind. Bred at UC Riverside.
Tavares Limequat
Kumquat × Key lime — small tart-sweet fruit eaten whole; cold-hardier than lime.
Thomasville Citrangequat
Citrange × kumquat — very cold-hardy (to ~5°F); tart fruit usable for juice.
Swingle Citrumelo
Duncan grapefruit × trifoliate orange — used mainly as a cold-hardy rootstock; fruit is inedible.
Carrizo Citrange
Washington navel × Poncirus trifoliata — the most widely used commercial citrus rootstock; fruit is bitter.
Haruka
Japanese natsudaidai × Hyuganatsu hybrid — pale yellow, mildly sweet, aromatic.
Rough Lemon
Old lemon-like rootstock species; vigorous but fruit is coarse and seedy.
Alemow
Papeda species used as a lemon rootstock; fruit is inedible.
Volkameriana
Lemon × sour orange used as a vigorous rootstock; fruit is acidic and mostly ornamental.