Red Maple
- Hardiness
- 3-9
- Mature size
- 40-70 ft
- Growth rate
- Fast
- Pollination
- Very early red blooms feed the first bees of March
- Bloom season
- March (red haze before leaves)
- Harvest season
- Can be tapped for syrup (lower sugar than sugar maple)
The illustrated growing guide
Family Sapindaceae

Maple here covers 3 types: Red Maple, Sugar Maple and Japanese Maple. Hardiness alone runs USDA 3–9 across them, so which type you have decides where it survives. Mature size, growth rate and bloom season are given below across all 3 types rather than as one plant's figures. Pollination and harvest season have no single answer here — which of the 3 types you have decides it.
I
Will maple suit your garden, and what goes wrong.
Zone fit depends on which maple you have
Hardiness varies across the types of this plant — check the care groups below and the cultivar catalogue to match one to your climate.
No pest or disease records on file for maple — which means the library has none, not that the plant has none.
Which one do you have?
Where these differ, the key facts above give the span across all of them. Each type’s own figures, as the catalogue records them:
II
Light, water, soil, propagation and the season’s jobs.
Maple merges several types whose light, water and soil needs differ — the care groups and the growing playbook carry what applies to each.
III
What maple asks for, month by month.
No fixed season calendar for maple — its care follows conditions, not the calendar.
IV
What it does for the garden, and what it is grown for.
! Some parts toxic — see notesTOXIC TO HORSES — wilted or dried leaves and bark (fresh leaves are not); about 1.5 lb is toxic and 3 lb can be lethal, and dried leaves stay toxic for around 30 days. Not a pasture tree. Llamas and alpacas are also susceptible; ruminants are not. · Caution around horses. Extension services implicate only RED maple, but in-vitro work found sugar maple leaf extract also oxidises equine red cells (Am J Vet Res 2002), and silver maple leaf toxicosis is clinically documented. Sources disagree — do not let horses eat wilted leaves of any maple. · No documented toxicity — but no trusted source affirmatively clears it either, so this is 'not known to be toxic', not 'known to be safe'. As with any maple, keep wilted leaves away from horses.
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
V
Named varieties of maple, ruled as a catalogue.
No named cultivars on file for maple yet — the species itself is what nurseries sell.
VI
Where the care distinctions come from, and how the plant is filed.
Research basis
No extension citations are attached to mapleyet. The care figures below come from the library's own catalogue rather than a traced primary source.
VII
Third-party nurseries — not Story Thyme Farms.
Third-party nurseries, not Story Thyme Farms. Prices are theirs.
Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.
VIII
Maple questions, answered straight.
With care. TOXIC TO HORSES — wilted or dried leaves and bark (fresh leaves are not); about 1.5 lb is toxic and 3 lb can be lethal, and dried leaves stay toxic for around 30 days. Not a pasture tree. Llamas and alpacas are also susceptible; ruminants are not. · Caution around horses. Extension services implicate only RED maple, but in-vitro work found sugar maple leaf extract also oxidises equine red cells (Am J Vet Res 2002), and silver maple leaf toxicosis is clinically documented. Sources disagree — do not let horses eat wilted leaves of any maple. · No documented toxicity — but no trusted source affirmatively clears it either, so this is 'not known to be toxic', not 'known to be safe'. As with any maple, keep wilted leaves away from horses. Site it accordingly if children or pets roam the garden. This is general reference, not medical or veterinary advice — call a vet or poison control if something has actually been eaten.
Seed (stratify), cuttings, or layering.
IX
Where maple sits in the library.