Gleditsia triacanthos
treeHoney locust (Gleditsia triacanthos) is a fast, broad-canopied legume tree, 60 to 80 ft tall, casting dappled, lacy shade through its fine ferny leaflets and dropping long, twisted brown pods in fall. Wild trees are armed with fearsome branched thorns on trunk and limbs, though thornless forms exist. The sweet, sticky pulp inside the green pods was a traditional food and sweetener, eaten and brewed. Extraordinarily tough - shrugging off drought, salt, wind, poor soil, and city air - it is a member of the bean family, though, unlike most legumes, it does not fix nitrogen; it is grown for those pods, for light shade that grass grows under, and as a hardy multipurpose tree.
Sun
full sun
Water
Every 21 days
Harvest
~180 days
Difficulty
easy
Lifecycle
perennial
Comes back every year
Spacing
25-35 ft apart
Planting Depth
Set root flare at soil line
Soil pH
6.0-8.0
Soil Type
Adaptable; any well-draining soil
Hardiness Zones
Zones 3 – 8
When to Fertilize
Rarely needed once established
Fertilizer
None to low; tolerates poor soil
Honey locust thrives in full sun and almost any well-drained soil, tolerating drought, salt, alkalinity, compaction, and pollution once established - one of the most adaptable trees there is. Plant in spring or fall and water while young; after that it needs little. It grows fast and casts an airy shade. The wild species has dangerous thorns and weedy, self-seeding pods, so for a yard the thornless, often podless ornamental forms are usually chosen - but for the edible pods you want a wild, thorned, pod-bearing tree, sited carefully away from foot traffic. Though it belongs to the bean family, it does not form root nodules or fix nitrogen, so do not count on it to feed the soil - its toughness comes from sheer adaptability.
Direct sow
Apr 29
Projected first harvest
Oct 26
Good neighbors that attract beneficial insects or deter pests
Proactive ways to stop trouble before it starts — tap a name with an arrow for its full guide
Bore stressed trunks; keep trees vigorous and avoid bark wounds
Webbed, chewed foliage late in summer; prune out nests, though damage is mostly cosmetic
Blotch the leaflets but rarely harm a fast-growing tree; tolerate light damage
Gather the long pods in fall as they ripen brown and begin to dry on the tree. The sweet, moist, greenish pulp between the seeds is the edible part while the pods are still fresh; later it dries. Split the pods and scrape out the sticky pulp to eat raw, or dry whole pods and grind the pulp as a sweetener, discarding the hard seeds. Mind the thorns on wild trees when harvesting. Pods are plentiful in a good year.
The sweet pulp inside honey locust pods is edible, tasting faintly of honey, and was traditionally eaten fresh, dried and ground as a sweetener, or brewed into a drink; the seeds are not eaten raw. The tree's broader value is as a tough, fast, nitrogen-fixing shade tree for hard sites, and the pods and seeds also feed wildlife and livestock.
For educational and informational purposes only — HomeSown is not medical, health, or other professional advice. Always positively identify any plant before handling or eating it; some plants, and some parts of otherwise-edible plants, are toxic. Consult a qualified professional before consuming or otherwise using any plant, especially if you are pregnant, nursing, taking medication, or have a health condition.