Sweet, Easy-Peel Citrus for Phoenix Backyards: Mandarin

Mandarin (Citrus reticulata), the group that includes tangerines, is one of the most rewarding citrus trees you can grow in the Phoenix Valley. It brings glossy evergreen leaves, fragrant white spring blossoms, and sweet, easy-to-peel fruit that ripens in late fall and winter. Mandarins are a little hardier to cold than lemons and limes and use slightly less water than oranges, which makes them a smart backyard citrus for Scottsdale, Chandler, Gilbert, Mesa, and Tempe yards. Like all citrus, it is not a desert plant: it needs regular deep watering and full sun to fruit well.

Mandarin Plant Details

Mandarin Uses in Phoenix Landscapes

Backyard Fruit Tree

A mandarin gives you fresh, easy-peel fruit through the cool months. It is self-fertile, so a single tree will fruit on its own. Pair it with a lemon or grapefruit for a small backyard grove that keeps citrus coming through winter.

Evergreen Shade and Screening

With a rounded evergreen canopy that can reach 10 to 20 feet, a mandarin softens a block wall, shades a patio edge, and stays green all year. Leave the lower branches on: they shade the trunk and make picking easy.

Fragrant Patio Tree

The spring blossoms are intensely fragrant, so plant it where you can enjoy them, near a patio or outdoor seating, with room for the canopy to spread.

Best Time to Plant Mandarin in Phoenix

Spring, after the danger of frost has passed (mid-February through May), is the best time to plant citrus in the low desert. The tree gets months to root in before its first summer, and it avoids frost while young. Fall planting (October to December) also works, but a newly planted tree is more frost-prone, so be ready to cover it on cold nights. Avoid planting June through September.

How to Plant Mandarin

1. Pick the spot: full sun, protected from wind, ideally near a sunny south-facing wall, with room for a 10 to 20 foot canopy.
2. Dig wide, not deep: make the hole 2 to 3 times the root ball width and no deeper than the root ball.
3. Check for caliche: break through any hardpan so water drains away from the roots.
4. Set it at the right height: keep the top of the root ball level with or slightly above the surrounding soil, and keep the bud union above grade.
5. Build a basin: a low soil ring that extends about a foot past the canopy holds water over the whole root zone.
6. Protect the trunk: if bark is exposed to sun, paint it with white latex paint or use a tree wrap to prevent sunburn.

Watering Mandarin in Phoenix

These intervals follow University of Arizona Extension guidance for irrigated citrus (AZ1151). Each time you water, wet the soil from the trunk to just beyond the drip line, at least 2 feet deep. Water more often in sandy or gravelly soil and less often in heavy clay.

• First month after planting: every 2 to 3 days
• Months 2 to 3: every 3 to 5 days
• Month 4 to year 1: every 2 to 5 days in July to September, 5 to 7 days in May to June, 7 to 10 days in March to April, 5 to 10 days in October to November, and 14 days in December to February
• Years 1 to 2: every 7 to 10 days in May to September, 10 to 14 days in spring and fall, and 14 to 21 days in winter
• Year 3 and older: every 10 to 14 days in July to September, 14 days in May to June, 14 to 21 days in spring and fall, and 21 to 30 days in winter

Drip Irrigation

Place emitters in a ring out at the drip line, not against the trunk, and add emitters as the canopy grows so the whole root zone gets wet. Run drip long enough to reach the 2 foot depth each cycle.

How cold-hardy is a mandarin in Phoenix?
Mandarins are among the more cold-tolerant citrus. University of Arizona Extension groups them with oranges and grapefruit as partially cold hardy, and established trees usually come through brief dips into the mid-20s. Young trees and ripening fruit are more tender, so cover the tree with frost cloth or a blanket draped to the ground whenever a freeze is forecast, and water the day before.

Does a mandarin need a second tree to fruit?
No. Mandarins are self-fertile, and bees handle pollination. A second citrus nearby is not required.

When do mandarins ripen in Phoenix?
Late fall through winter, depending on the variety. Taste a fruit or two before harvesting the whole tree.

Is a mandarin safe for pets?
Treat it as not pet-safe. The ASPCA does not list mandarin by name, but it lists orange, lemon, lime, grapefruit, and calamondin as toxic to dogs and cats because of the essential oils and psoralens in leaves and peel. The fruit flesh itself is not the concern; keep pets from chewing leaves, stems, and peels.

At a Glance

✔ Edible ✔ Evergreen ✔ Fragrant Spring Bloom ✔ Self-Fertile

Plant It With

• Meyer Lemon: a compact lemon for a mixed backyard citrus grove.
• Tangelo Tree: a mandarin-grapefruit cross that ripens in the same winter season.
• Red Grapefruit: another winter citrus to stretch the harvest.

Is Mandarin Right for Your Yard?

A mandarin fits a sunny, wind-protected spot with well-drained soil, room for a 10 to 20 foot canopy, and a reliable drip or basin watering routine. It is not a fit for a shady yard, soil that stays wet, a spot where you cannot cover a young tree on freeze nights, or a yard where pets chew on plants.