Limes are made for Zone 11. They are the most heat-loving of the common citrus, thriving in tropical sun and humidity where oranges and grapefruit can struggle, and a single tree can fruit almost year-round once it settles in. If you cook with lime juice, grow Thai food, or just want fresh limes for drinks, one tree in a Zone 11 garden is one of the highest-value plantings you can make.
Limes are also forgiving: they tolerate poorer soil than lemons and bounce back fast from pruning. The planting calendar hub shows how Zone 11 timing works month by month, and our guide to when to plant lemons in Zone 11 covers limes' closest citrus cousin, which shares almost the same care.
Zone 11 at a glance
USDA Zone 11 covers the warmest, most tropical parts of the United States — Hawaii, southern Florida, Puerto Rico and the warmest coastal pockets. Winters are warm, with average winter lows of 40 to 50°F, and the growing season never really ends.
Zone 11 is frost-free year-round: there is no average last spring frost and no average first autumn frost. That means you plant by heat and by the wet and dry seasons, not by frost dates. These are USDA zone averages, not exact figures for any one garden — always check your local extension service and the forecast before planting.
| Detail | Zone 11 guidance |
|---|---|
| Average winter low | 40 to 50°F |
| Average last spring frost | Frost-free (no frost dates) |
| Average first autumn frost | Frost-free (no frost dates) |
| Days to germination | 14–28 days |
| Days to maturity | 1095–1825 days |
| Sowing | both |
| Sun | full sun |
| Soil pH | 5.5–6.5 |
| Spacing | 120–180 inches |
| Water needs | moderate |
| Cold tolerance | tender |
When to plant limes in Zone 11
Plant limes in Zone 11 at the start of the cooler, drier months, roughly November through February, so the young tree can root deeply before the hot wet season. Limes are more tender than lemons — they dislike any cold at all — which is exactly why Zone 11, with winter lows of 40 to 50°F and no frost, suits them so well. Seed germinates in 14–28 days, but a lime tree takes 1095–1825 days — three to five years — to bear its first real crop, so buy a grafted nursery tree rather than starting from a pip. Zone 11 is frost-free, so there is no last frost date; check your local extension service for the best planting window in your exact area.
Starting limes in Zone 11
Start limes from a grafted nursery tree, never from seed. Seed-grown limes take years to fruit and rarely taste like the parent. Persian (Tahiti) limes are the usual choice — seedless, large and heavy-cropping — while Key limes are smaller, sharper and more aromatic, and suit smaller gardens. Space trees 120–180 inches apart, because a lime grows wide and spreading. Dig a wide hole, set the tree at the same depth it grew in the pot with the graft union above soil level, and water it in deeply. A lime in a large pot works well too, and pots let you move the tree to the sunniest spot.
Soil, spacing, sun and water
Limes need full sun and deep, fertile, well-drained soil with a pH of 5.5–6.5 — slightly acidic, which suits most tropical soils once compost is added. In Zone 11, drainage is critical: heavy rain on clay soil rots citrus roots. Dig in plenty of compost before planting, plant on a slight mound if your soil is heavy, and mulch thickly to hold moisture and keep the roots cool. Water needs are moderate — water young trees regularly in their first year, then water in long dry spells, especially while fruit is swelling, because drought makes limes small and dry.
Companion planting
Good companions for limes include borage, marigolds, clover and chives. Clover fixes nitrogen and makes a living mulch under the tree, while marigolds deter soil pests and borage draws in bees. Garlic and chives planted nearby are said to help keep pests down. Keep limes away from walnut trees, whose roots poison them. The companion planting finder can suggest combinations for your whole garden.
Pests and problems
The common pests to watch for with limes are aphids, slugs and cutworms. Aphids cluster on young shoots and under leaves — wash them off with a strong jet of water, and look out for the ants that farm them. Slugs and snails chew young leaves at night in the wet season; pick them off by hand or use a barrier of copper tape around pots. Citrus leafminer can tunnel in young leaves, but it rarely harms a mature tree. If you are unsure what is damaging a tree, the pest identifier helper can narrow it down.
Harvest and storage
Harvest limes 1095–1825 days after planting — expect the first real crop in three to five years from a grafted tree. Pick limes when they are full-sized, glossy and slightly soft to a gentle squeeze; a lime that turns yellow is overripe, though still usable. In Zone 11, limes can fruit almost year-round, so pick as you need them and leave the rest on the tree — they store far better on the branch than in the fridge. Pick in the morning, handle fruit gently, and use within a few weeks. Prune in the cool season to keep the canopy open — the pruning calendar shows the right window.
Persian limes or Key limes?
Most Zone 11 gardeners should plant a Persian (Tahiti) lime. It is seedless, large, heavy-cropping and the lime you will find in most shops, so its flavour is familiar. Key limes are a different experience: much smaller, with thin skin, more seeds and a sharper, more aromatic juice that makes the classic Key lime pie. Key lime trees are also thornier and more sprawling, and their fruit is fiddly to pick in quantity. If you have room for two trees, plant one of each — the Persian for everyday cooking and the Key for pies and cocktails. If you only have room for one, the Persian is the practical choice, and it fruits more reliably in the tropics.
Frequently asked questions
When should I plant limes in Zone 11?
Plant at the start of the cooler, drier months, roughly November through February, so the tree can root before the hot wet season. Buy a grafted nursery tree for fruit in three to five years.
Are limes easier to grow than lemons in Zone 11?
Yes, slightly — limes are the most heat-loving citrus and thrive in tropical humidity. Lemons are close behind, and both fruit almost year-round in Zone 11.
How long until a lime tree bears fruit?
A grafted tree takes 1095–1825 days — three to five years — to bear its first real crop. Seed-grown trees take much longer and may never fruit well.
Why are my limes turning yellow on the tree?
A lime that turns yellow is overripe — it has been left on the tree too long. Pick limes while they are still green, glossy and slightly soft.