Southern Magnolia

Year-round

Southern Magnolia is a large, native evergreen tree in the Orlando area, valued for its glossy leaves and big fragrant white flowers, but it needs full sun and plenty of room to reach its mature size.

• Give it full sun to partial shade (6 or more hours of direct sun is ideal, though it tolerates 2 to 6 hours)
• Plant in moist, well drained soil; it adapts to acid, neutral, or alkaline pH but does poorly in soggy or flooded spots
• Expect a mature size of roughly 60 to 80 feet tall and 30 to 50 feet wide, so place it well away from the house, driveway, and power lines
• This tree is native to Central Florida, including the Orlando area, where it grows naturally in hammocks and slope forests south through Highlands County
• The ASPCA lists Magnolia as non-toxic to dogs, cats, and horses, though eating any plant material can still upset a pet's stomach

A mature Southern Magnolia reads as a classic, HOA-friendly shade tree, but its dense canopy drops leaves and seed pods year round and shades out nearly everything underneath it, so keep it off front walkways and away from foundation plantings.

Fall

Fall in Orlando is a good window to plant a Southern Magnolia as rain tapers off and the weather cools, while established trees mostly need continued cleanup of dropped leaves and pods.

• Rainfall drops off through October and November, so start checking soil moisture instead of relying on summer storms, watering deeply when the top few inches of soil are dry
• Fall through winter is a good window to plant a new Southern Magnolia in Central Florida, giving roots time to establish before next summer's heat
• Hold off on nitrogen fertilizer late in the season so the tree is not pushed into tender new growth right before the first frost, which averages around December 3 in the Orlando area
• Continue raking fallen leathery leaves and hard seed pods, since Southern Magnolia drops litter across multiple seasons, not just fall

Raking fallen leaves and hard seed pods off walkways and the driveway keeps the front yard looking tidy and avoids a slip hazard, without needing to prune the tree's natural shape.

Winter

Established Southern Magnolias handle Orlando's mild Zone 9a winters easily since the species is hardy well into USDA zone 7, but a young or newly planted tree still benefits from frost protection during a hard freeze.

• Southern Magnolia is hardy from about USDA zone 6a/7a through 10, so Orlando's Zone 9a winters are well within an established tree's tolerance
• Water the tree the day before a forecast freeze; well hydrated trees and soil hold heat better and resist cold injury compared to dry ones
• For a young or newly planted tree, cover it with a frost cloth or blanket ahead of a hard freeze and remove the covering once temperatures rise back above freezing
• A 2 to 3 inch mulch layer over the root zone, kept away from the trunk, adds some insulation against cold snaps

Spring

Spring in Orlando brings the start of magnolia's big white blooms along with a wave of old leaf drop as new growth comes in, so expect some litter even though the tree is evergreen.

• Southern Magnolia sheds many of its older leathery leaves in spring even as new growth flushes out, since being evergreen does not mean litter free
• Flowering begins in late spring with large, fragrant creamy white blooms roughly 8 to 12 inches across
• Orlando's average last spring frost is around February 5, so by the time flower buds open most years the frost risk has passed, but a late cold snap can still brown open flowers below about 30 degrees F
• Check new growth for scale insects such as magnolia scale; a heavy infestation can lead to sooty mold on the leaves

Summer

Summer is Orlando's rainy season, so an established Southern Magnolia usually needs little supplemental watering, but the same heat and humidity it tolerates well can also fuel scale insects and sooty mold on the leaves.

• Established magnolias tolerate Central Florida's summer heat and humidity well, but the tree dislikes standing water, so make sure summer downpours drain away from the root zone rather than pooling
• During hot, dry stretches with no recent rain, water deeply once a week rather than giving light daily sprinkles
• Sporadic white blooms can continue through summer on an established tree
• Keep a 2 to 3 inch mulch ring out to the drip line to hold soil moisture and moderate root zone temperature, keeping mulch off the trunk itself