Grow and Care for Geiger Tree

Grow and Care for Geiger Tree guide illustration

Grow geiger tree in full sun and soil that drains. Geiger tree is Cordia, also sold as scarlet cordia. A true olive is a different plant.

How to Grow Geiger Tree care summary diagram

Give it full sun, soil that drains, and a frost-free site

FactorRecommendedAvoid
SunFull sun; light shade still worksDo not plant it in deep courtyard shade
SoilGround that drains after rain; sand, loam, or alkaline ground is fineDo not leave the roots in standing water
DroughtWater until the tree is rooted, then a dry spell is fineDo not keep a mature plant in a wet, low spot
FrostA frost-free site for orange GeigerDo not plant orange Geiger where a freeze will hit the top
SaltSalt spray is fine on orange GeigerDo not treat Mexican olive as a salt-spray beach tree

Give it full sun and soil that still drains after rain. Orange Geiger takes salt spray and needs a frost-free site, because a freeze burns the top. [1] Water a new plant until the roots leave the nursery ball, then a dry spell is fine. [2] geiger tree is the orange-flower coastal tree with sandpaper leaves. If you want the inland white-flower tree that takes a light freeze, pick that kind on Types of Geiger Tree.

How much sun does geiger tree need?

Full sun is the usual site. Light shade still works, but bloom thins if the tree sits in deep courtyard shade.

Plant with the flare at the soil, and water until it roots

Set the root flare — where the trunk widens at the base — even with the surrounding soil. Soak the root zone after planting, then water until the plant is rooted. A container tree can go in during the warm season if you can water. [3]

  1. Soak the pot, then dig a hole as deep as the root ball and two to three times as wide. Tease circling roots so they leave the nursery ball.
  2. Set the flare at the surrounding soil grade. Do not bury the flare under extra backfill.
  3. Keep about ten feet from the house so the crown can fill. For a row, space plants about six to eight feet apart. [4]
  4. Backfill with the original soil, water to settle, and mulch the root zone. Keep turf and bark a few inches off the trunk.

When should I plant geiger tree?

Plant in the warm season, when you can water until the roots leave the nursery ball. Do not set a new orange Geiger into a freeze week.

Train one trunk so the tree does not split

Most nursery plants arrive with several low trunks. Two equal trunks with a narrow crotch can split as the crown loads. Buy a single-trunk tree for a street or patio, or train one leader while the plant is young.

  1. Choose a well-attached leader, and remove competing trunks while the wood is still small.
  2. Cut out crossing branches and any crotch with included bark, so the remaining limbs do not rub.
  3. If you need to keep size, cut in spring after the heaviest bloom, and take a branch back to a side shoot.
  4. Leave the tree the room it will use. Do not shear it as a tight hedge; the large leaves look ragged when they are sliced.

Can I leave geiger tree as a multi-trunk clump?

You can, but the crotch is more likely to split later. For a street, a patio, or a parking lot, train or buy one trunk.

Not a true olive, and not tea olive or hibiscus

Geiger tree is Cordia. A kitchen olive is Olea. Tea olive is Osmanthus. Hibiscus is a different flowering shrub. They are not the same plant and they do not take the same care.

  • Geiger tree (Cordia sebestena) — sandpaper leaves and orange funnel flowers. Mexican olive in this catalog is the white-flower cousin with velvety leaves.
  • True olive (Olea) — a Mediterranean fruit tree with narrow silvery leaves, not sandpaper Cordia foliage. It is not this plant.
  • Tea olive (Osmanthus) — a fragrant evergreen with small white flowers, not orange Geiger clusters. Care lives on How to Grow Osmanthus.
  • Hibiscus (Hibiscus) — large tropical blooms on a different shrub. Care lives on How to Grow Hibiscus.

Oleander is a different poisonous shrub some Florida yards plant nearby. Confirm the Latin on the tag.

Is Mexican olive a true olive?

No. Mexican olive is Cordia boissieri. A kitchen olive is Olea. The fruit looks vaguely olive-like, but it is not an oil crop.

If a young plant flags in a dry week, soak the root zone once, then check a few inches down before you water again.

FAQ

Can I grow geiger tree in a pot?

Only as a short nursery start or a large tub you can water. Landscape geiger tree wants a spreading root system, and it does not stay a small patio plant.

Are the fruits edible?

Orange Geiger fruit is fragrant but not tasty. Mexican olive fruit is sweet in small bites and better left for birds. Do not eat it as a crop, and do not plant over a walk if dropped fruit bothers you.

What pests hit geiger tree?

A geiger beetle can chew leaves now and then. The tree usually grows new foliage. Cut a dead twig. Do not spray as a default.

Can I grow geiger tree from seed or a cutting?

You can start it from seed or by air-layering a low branch, but a nursery tree is faster. Seed will not copy a named plant, and it takes years to reach bloom size.

Recommended plants

References

  1. [1] UF/IFAS Extension - https://ask.ifas.ufl.edu/publication/ST182
  2. [2] Lady Bird Johnson Wildflower Center - https://www.wildflower.org/plants/result.php?id_plant=COBO2
  3. [3] Gardening Know How - https://www.gardeningknowhow.com/ornamental/trees/geiger-tree/geiger-tree-information.htm
  4. [4] South Florida Plant Guide - https://www.south-florida-plant-guide.com/geiger-tree.html

This note is part of Cordia Guides.

More first-season notes by plant are gathered in How to Grow Guides.

Updated: Reviewed by Bosquelle Editors

This guide is written for real gardens, not perfect climates. Results vary with site, season, and plant choice. We draw on multiple sources and practical experience; treat the steps here as honest guidance, not a promise that every bed will behave the same.