Australian Finger Lime
Also known as: Microcitrus australasica · Citrus caviar
What's special about Australian Finger Lime
Slender finger-shaped fruit filled with juicy vesicles that pop like caviar. Comes in green, pink, and red selections.
Growing this variety
Australian Finger Lime follows the same growing basics as Lime. Variety-specific maturity above; everything else below applies to the whole Lime 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
Tropical acidic citrus. Persian (Bearss) is the standard supermarket lime; Key lime is smaller, seedy, and more aromatic; Kaffir is grown for its leaves; Finger lime for its caviar-like pearls.
Woody plant facts
Soil preferences
Deep, rich, well-drained soil with high organic matter.
6.0–6.8 for most; strawberries and blueberries prefer 4.5–6.0.
Compost annually; mulch with wood chips for perennial fruits.
Watering
1–2 in per week; deeper as plants establish.
Soak the root zone, not the foliage. Drip irrigation is ideal for long-lived plantings.
Overwatered: fruit split, root rot, mushy fallen fruit. Underwatered: shriveled berries, dropped flowers, sunscald.
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
70–85°F (21–29°C)
55–70°F (13–21°C)
Tropical fruits (passionfruit, pepino, naranjilla) frost-tender. Temperate fruits (pomegranate, fig, sea buckthorn) tolerate hard freezes once established.
Container growing
Possible with the right cultivar
10+ gal (38 L) for tree fruit; 3–5 gal for berry canes; 12 in deep for strawberries
Choose dwarf or patio cultivars for containers; overwinter tender types indoors.
Detailed harvesting
Pick fully ripe — fruit sweetens on the plant, not the counter. Test with a gentle tug; ripe fruit releases easily.
Post-harvest storage & preservation
Refrigerate soft fruit unwashed 3–7 days. Freeze on trays, then bag. Dehydrate slices at 135°F. Jam or preserve surplus.
Culinary, medicinal & other uses
Fresh eating, jam, wine, syrup, drying. Use imperfect fruit for cooking; keep the best for the table.
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
Most perennial fruit are insect-pollinated and often not true-to-type from seed.
Named cultivars must be propagated by cutting, division, or graft to stay true.
Rinse seeds from ripe pulp; dry 1–2 weeks. Many need cold stratification before sowing.
Your zone's planting calendar
Pick your USDA hardiness zone and we'll estimate the key dates for lime in your area. These are regional averages — always check your own last-frost forecast before sowing.
My Australian Finger Lime Lime notes
Australian Finger Lime Lime 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 lime from what you already have
For fleshy fruits (tomato-family, melons, ground cherries), ferment the seed out. For dry-seeded fruits (roselle, hibiscus family), just let capsules dry on the plant.
- 1Fleshy fruit: scoop seeds and pulp into a jar of water; ferment 2–4 days until it molds; rinse, dry.
- 2Dry-seeded fruit: let capsules turn brown on the plant, then split and tap seeds out.
- 3Perennial fruits (fig, pomegranate, sea buckthorn): far easier from cuttings, division, or suckers than seed.
- 4Store all seed cool, dark, and dry in labeled envelopes.
Storage: 3–6 years dry.
Order more seeds
Running low? Reorder from one of these seed stores.
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Other Lime varieties
Key Lime
Small yellow-when-ripe, seedy, highly aromatic lime — the classic Key lime pie lime. Very cold-tender.
Persian Lime
Larger seedless green lime — the standard supermarket lime. Cold-hardier than Key lime.
Rangpur
Sour mandarin-lime hybrid — orange-red flesh, tart. Used in gin and marmalade.
Kaffir Lime
Grown for its distinctive double leaves used in Thai cooking; knobbly bumpy rind is also used.
Australian Desert Lime
Native Australian citrus — small round fruit, very drought and cold tolerant.
Calamansi
Small round mandarin-lime hybrid; tart-sweet, aromatic, widely used in Filipino cooking. Excellent container citrus.
Sweet Lime
Very low-acid lime — mild, almost bland, popular for juicing in India.