How to grow Finger Lime

Finger Lime tree grow and care – as shrub or small tree of the genus Citrus also known as Lime caviar or Australian finger lime, is a type of Lime. Finger Lime tree perennial evergreen plant, grow for edible fruits, can be used also as ornamental plant and can grow as dwarf tree or bonsai, can grow in subtropical or mediterranean climate and growing hardiness growing zone 10+ and in hardiness zone 9b with the overwinter care.

Finger Lime tree Plants, Seeds & Supplies for Sale

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Leaves color green in elliptic shape, buds white with purple and the flowers are white with yellow/green stamen.

Finger Lime tree edible fruits

Fruit are oval in size ~3-10 cm, inside the fruit there is pulp (small round cells covered with a thinner layer). The cells can appear in a variety of colors: yellow, write, red, green, it can be sour to sour with hint of sweet the taste remind lemon or lime, rind appears in green, red, brown, orange, black, skin color is not indicative of the color of the inside spheres, the rind is edible used as spices for flavor and fragrant

Finger Lime tree for sale – Seeds or Plants to Buy

How to grow Finger Lime tree growing conditions and care:

Well-drained soil, better loamy soil, moist soil in the fruits season and better to put mulch

How to care:
Design for easy to pick the fruits (when there are thorns it’s important but not all cultivars have thorns), add to the soil, organic matter, humus and fertilizer, in location with hot summer sun that the main trunk is expose to the sun better to better to whitewash (lime paint)

What is the best way to start growing:
Plant / Seed / Cutting / Air layering

Propagate by cutting:
Propagating require: sterilize knife, sterilize soil (put the soil in microwave), soil that will keep moist like: peat soil, coconut coir or peat moss, better to do it in in temperature of 25-28C (77-82F) possible higher, high humidity, moist soil (don’t let it dry), use root growth hormone and when growing from cutting it’s important, to give humidity that will be like fog

Is it necessary to graft or cutting?
Yes, necessary to ensure the existent of the fruits and quality of the fruits and there are different parameters: size, taste (sweet, sour or something in between), color of the fruits, juicy or dry, amount of seeds or seedless, season of the fruits (different cultivars have different dates for the fruits), better to graft more than one cultivar or more than on citrus.

Cutting need to use for the base of the tree for: disease-free, base that fit for different soils, resistance for drought, base that won’t resist for grafting or specific cultivar for the fruits.

Difficulties/Problems with growing:
Thorns

Planting season:
Spring to summer in hardiness growing zone 9b-10a, spring to autumn in hardiness zone 10b, all the year in hardiness zone 11+, better not to plant it in the hot summer days

How to plant:
Dig a hole as deep as the current root ball plus extra 20-40%, put in the hole organic matter, hummus and dried leaves and mix it with some soil, put the tree and loos little bit the root ball above the hole, plant the tree and cover it and don’t push the soil too much strong but not too much lightly because it won’t be stable, after planting put mulch to keep moist on soil, put water, for the next two weeks put every day (better in the morning) , better to take that the tree will be stable, and if not support it with bamboo or a stick that it won’t fall.

Pests and diseases:
Citrus leaf miner, aphids, citrus foot rot, ant, citrus gummosis

Pruning season:
End of the winter, beginning of the spring

How to prune:
Dead branch, cross branch, need to reduce the density branches

Size of the plant:
1.5-6 m, 5-20 feet

Growth speed in optimal condition:
Medium growing to slow growing

Water requirement:
Average amount of water, usually the plant need more water in the fruits season, but usually it’s when there are rains and if raining season delay need to increase the amount of water that the fruits won’t be dry and won’t explode.

Light conditions in optimal condition for growing:
Full Sun and possible to grow in half shade in the right care but will produce less fruits

Is it possible to grow indoor as houseplant?
No, but possible to grow next to window with sun that possible, grow it as dwarf tree and will take more time to get fruits

Growing also possible in pots, planter, flowerpot, containers:
Yes, when grow in container need to choose the desirable container if it’s small plant it directly if it’s a big container bigger than 30%-50% than the root ball, every time that the tree arrive to full capacity need to switch to bigger until arrives to desirable size, better to switch the soil once in few years soil lose the viability over time and it’s efficient of care for the tree, when it’s not possible to switch all the soil just part of the soil in the side of the roots (don’t afraid from root cutting), it will bear fruits also in 5-10gallon (40 liter) container (but bigger is better), drainage it’s important and need to make holes and to use peat soil and maybe some lava grit in the bottom or something like that, put a bottom for the container and when water the plant let it fill the bottom but also need to dry in the same day, better to grow as dwarf tree or to grow it as bonsai.

Blooming information

When does flowers bloom?
Spring to summer

General information about the flower
White flower with yellow stamen

Pollination is done by:
In the first years should thinning the flowers

Pollination is done by:
Bees

Edible Fruits

Fruit harvest season:
Autumn to winter, the fruits will hold on the tree until the end of the spring but need to check that they don’t become dry or rotten

Pests or diseases in Finger Lime fruit:
Citrus stubborn disease, citrus black spot, alternaria

What can be done with big quantities of Finger Lime fruit?
Eat, juice alcohol, the rind used fragrant, fruit leather, sugary rind

Work requirements on the fruit:
Pick up (sometimes cut branches that grow into the fruit)

How long does it take to bear fruit?
2-3 years

Ripening of fruit
Possible to pick up the fruit before and let them ripening them in the house (or even to use them)

How to eat finger limes:

Taste of the fruits it’s like lemon or lime so can be used in the same way, possible to eat it by peeling the peel and also possible to cut it in the middle and taking all with teaspoon, the fruit like little bubble and it’s pleasant to eat.

How to grow Finger lime tree from seed

Sowing requirement:
Moist soil, well-drained soil, 20-27C temperature and better in sunny location

Saving and care seeds until sowing:
Dry, dark location in room temperature

Sowing season:
Spring to early summer (possible also summer to autumn)

How to plant:
Planting in soil that keep moist, cover the seed lightly

Planting spacing:
Better in separate pots, direct on the place 3*4m (10*13 feet), for transplant 5*5 cm (2*2 inches)

Depth of Sowing:
2cm (1inches)

Conditions for seeds germinate:
Keep the soil and don’t let it dry, rich soil and sunny location

Watering requires for Seeds:
Average amount of water

Germination time:
2-4 weeks, but can take longer

Condition of seedling:
If there is Citrus leaf miner in one of the trees in the area, better to put it in greenhouse or indoor to protect the tree, young tree very sensitive to citrus leaf miners, better to cover the soil with mulch.

Scientific name:

Citrus australasica

Alternative names: Australian finger lime, Caviar lime tree

How to grow Finger Lime

Finger Lime

Finger Lime grow and care

Finger Lime plant care

GRowing Finger Lime

Finger Lime fruit

Categories

Blooming Seasons
  • Autumn flowers
  • Summer flowers
Edible Parts
  • Edible Fruit
Culinary uses
  • Alcoholic beverages
  • Beverage
  • Dried fruit
  • Eaten raw
  • Fruit
  • Ice pop & Ice cream plants
  • Juice
Flower colors
  • White flower
Climate
  • Mediterranean Climate
  • Subtropics Climate
  • Tropics Climate
Harvest Season
  • Autumn Harvest
Ornamental parts
  • Ornamental fruit
  • Ornamental leaves
  • Ornamental plant
Plant growing speed
  • Average growing plants
Plant life-form
  • Evergreen
  • Perennial plant
  • Tree
Plant Uses
  • Edible plants
  • Ornamental plants
Planting Season
  • Autumn Planting
  • Spring Planting
  • Summer planting
Plants sun exposure
  • Full sun Plants
Watering plants
  • Regularly water
  • Small amounts of water
Hardiness zone
  • Hardiness zone 10
  • Hardiness zone 11
  • Hardiness zone 12
  • Hardiness zone 13

Growing in Pots, Balconies & Indoors

The finger lime (Citrus australasica) is a 1.5-6 m (5-20 ft) evergreen citrus – too large for a windowsill at full size, but an excellent container and patio tree while young or grown as a grafted dwarf. The grower doesn’t class it as a room houseplant: indoor light is usually too weak for good fruiting, though a very sunny window can carry a dwarf tree.

Quick Details

  • Container Size: Don’t overpot – start close to the root-ball size and step up every few years; grow a grafted dwarf to keep it manageable.
  • Indoor Suitability: Not a deep-room houseplant; a grafted dwarf can grow and slowly fruit at a very sunny window.
  • Best Spot: Full sun – a bright patio, balcony, or the sunniest window; half shade is tolerated but gives fewer fruits.
  • Soil & Drainage: Free-draining, aerated mix (potting soil, or peat/coir with perlite); never leave the pot standing in water.
  • Watering in Pots: Keep evenly moist and water more through the fruiting period so fruit doesn’t dry or split; pots dry fast, but avoid waterlogging.

Indoors & On the Windowsill

  • Houseplant reality: The grower doesn’t rate it a room houseplant – indoor light is usually too weak for good fruiting.
  • Windowsill growing: Grow a grafted dwarf at the brightest, sunniest window, away from heaters and air vents; expect fruit to take longer than outdoors.
  • Overwintering: In cold-winter areas a potted tree can spend winter in a bright, cool but frost-free spot indoors and return outside once frost has passed – a main reason to keep citrus potted.
  • Safety: Citrus foliage and peel oils can mildly upset cats and dogs, and stems may be thorny – keep pets from chewing the plant. The ripe fruit itself is edible.

On a Balcony or Patio

  • Light & warmth: Give it the sunniest, most sheltered spot; walls and paving reflect heat and dry pots fast, so check moisture often in hot weather, and shelter young trees from strong wind.
  • Practicalities: Use a stable pot heavy enough not to topple, and let drainage water escape freely.

Choosing the Pot, Soil & Long-Term Care

  • Pot & drainage: Strong drainage holes are essential; skip a standing saucer of water to prevent root rot. Terracotta breathes and dries faster; glazed or plastic holds moisture longer.
  • Potting mix: Well-aerated – potting soil, or peat/coir with perlite or vermiculite.
  • Feeding: Potted citrus need feeding more often than ground trees as nutrients leach with each watering; use a citrus feed through the growing season.
  • Repotting: Refresh the mix and pot up every few years – the grower advises against leaving old, spent soil in the pot; keep a dwarf in shape with light root and top pruning.

Bloom & Edible Flower Guide

Quick Details

  • Bloom Season: Spring into summer
  • Time to First Bloom: A grafted plant usually begins flowering within its first few years
  • Flower Appearance: Small white flowers with yellow-green stamens, the buds tinted purple
  • Edibility: The fragrant white blossoms are edible and aromatic

Detailed Blooming Overview

The Australian finger lime is a slender, thorny citrus whose small white flowers, opening from purple-tinted buds, appear from spring into summer. Bees do the pollinating, and thinning in the early years helps a young plant establish before it carries a full crop.

Flower Characteristics

  • Small white flowers with yellow-green stamens.
  • Buds tinted purple.

Bloom Care & Thinning

  • Thinning: In the first years, thinning the flowers helps a young plant build strength.
  • Pollination: Pollinated by bees.

Bloom Health & Protection

  • Aphids and thrips: These can gather on the tender buds and new growth; a strong jet of water, insecticidal soap or neem oil keeps them down. Avoid spraying open blossoms so visiting bees are not harmed.