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Muscadine grape

Vitis rotundifolia

Muscadines are the native grapes of the Southeast, with thick skins, big seeds and a musky, fruity flavor all their own. Unlike European bunch grapes, they resist Pierce's disease and thrive in heat and humidity, which makes them the most dependable grape for Florida. Bronze types are often called scuppernongs.

Tree facts

Scientific name
Vitis rotundifolia
Origin
Southeastern United States
Tree size
Vine; trained on a trellis or arbor, one vine covers about 15–20 ft of wire
Growth rate
Fast
Sun
Full sun
Soil
Well-drained sandy or loamy soil. Avoid low, wet spots.
Soil pH
5.5–6.5
Pollination
Female cultivars (Fry, Scuppernong, Supreme, Jumbo) bear only with a self-fertile vine within about 50 ft. Self-fertile cultivars bear alone and pollinate the females.
Cold hardiness
Dormant vines tolerate about 10°F; most are damaged near 0°F
USDA zones
7–10
Years to first fruit
2–3
Season
Jul–Sep
Water
About every 7 days once established, without rain; more in heat, in pots and while young
Feeding
About every 60 days, Mar–Jul
Pruning
Jan–Feb
Taste
Sweet, musky and grapey, with a tart, chewy skin around soft pulp that slips out
Nutrition
Rich in resveratrol and other polyphenols, especially in the skins and seeds; good fiber

Is muscadine grape safe to eat? Edible and toxic parts

What you can eat

  • Ripe grapes: squeeze the pulp into your mouth, then eat or discard the skin and seeds
  • Juice, jelly and jam
  • Wine

Toxic parts and cautions

  • Toxic: Grapes and raisins of every kind, muscadines included, can cause sudden kidney failure in dogs, even in small amounts. Clean up fallen fruit and never share grapes with a dog.
  • Good to know: The seeds and thick skins are a choking risk for small children. Squeeze out and seed the pulp for them.

Pets: Dangerous to dogs: any amount of grapes, muscadines or raisins can cause kidney failure, so call a vet right away if a dog eats them. Keep cats away from them too, to be safe.

How to eat and enjoy muscadine grape

  • Fresh off the vine
  • Muscadine jelly and preserves
  • Muscadine hull pie, a Southern tradition
  • Juice
  • Sweet muscadine wine
  • Frozen whole as a summer snack

When it's ripe

Muscadines ripen one by one, not in tight bunches. Pick when fully colored, slightly soft and fragrant, when they come free with a gentle twist; ripe ones often drop. They don't ripen after picking, so taste first.

Storing it

Refrigerate unwashed for 1–2 weeks. Freeze whole for jelly or juice later.

Muscadine grape varieties (10)

  • Carlos

    A bronze, self-fertile muscadine, a standard for juice and wine and a dependable backyard pollinizer.

    Origin: North Carolina, 1970 · Taste: Sweet, mild · Season: Aug–Sep · Size: Small to medium

    Self-fertile; good disease resistance.

  • Fry

    A large, bronze female muscadine with excellent sweet flavor, one of the best for eating fresh.

    Origin: Georgia, 1970 · Taste: Very sweet · Season: Aug–Sep · Size: Large

    Female; needs a pollinizer. Prone to fruit rots in wet years.

  • Ison

    A black, self-fertile muscadine that bears big crops of medium-large fruit.

    Origin: Georgia · Taste: Sweet · Season: Aug–Sep · Size: Medium to large

    Self-fertile; an excellent pollinizer.

  • Jumbo

    Very large black muscadines that ripen over a long stretch of weeks.

    Taste: Sweet, mild · Season: Aug–Oct · Size: Very large

    Female; needs a pollinizer.

  • Noble

    A black, self-fertile muscadine used for red wine and juice, bearing heavy crops.

    Origin: North Carolina, 1971 · Taste: Sweet, musky · Season: Aug–Sep · Size: Small

    Self-fertile; a good pollinizer.

  • Scuppernong

    The original bronze muscadine, found growing wild near the Scuppernong River, and the name many Southerners use for all bronze muscadines.

    Origin: North Carolina, 1700s · Taste: Sweet, musky · Season: Aug–Sep · Size: Medium

    Female; needs a self-fertile vine nearby.

  • Southern Home

    A self-fertile black muscadine with deeply lobed, ornamental leaves, a good choice for an arbor.

    Origin: Florida (UF) · Taste: Sweet · Season: Aug–Sep · Size: Medium

    Self-fertile; does well in Florida.

  • Supreme

    A very large black muscadine, highly rated for fresh eating.

    Taste: Sweet, rich · Season: Aug–Sep · Size: Very large

    Female; needs a pollinizer.

  • Tara

    A large, bronze, self-fertile muscadine with good fresh-eating quality.

    Taste: Sweet · Season: Aug–Sep · Size: Large

    Self-fertile.

  • Triumph

    An early, bronze, self-fertile muscadine with good flavor.

    Origin: Georgia, 1980 · Taste: Sweet · Season: Aug · Size: Medium to large

    Self-fertile.

Pests and diseases to watch for

  • Powdery mildew

    White powdery coating on flower stalks, young leaves and tiny fruit; flowers dry up and fall.

    What to do: Sulfur or potassium bicarbonate spray at the first white patches.

  • Scale insects

    Small bumps, waxy or shell-like, on stems and leaf veins; sticky honeydew and black sooty mold below.

    What to do: Scrub small colonies off with a soft brush.

  • Mealybugs

    White cottony clusters in leaf joints, under leaves and on fruit stems; honeydew and sooty mold.

    What to do: Blast off with a strong spray of water.

  • Aphids

    Clusters of tiny soft insects on new shoots; leaves curl and get sticky.

    What to do: Spray off with water.

  • Sooty mold

    Black, papery film on leaves and fruit that wipes off; it grows on honeydew.

    What to do: Control the insects making honeydew; the mold then weathers away.

  • Spider mites

    Fine pale speckling on leaves, dusty undersides and fine webbing; leaves bronze and drop.

    What to do: Hose the undersides of leaves.

Growing muscadine grapes? Let Gardyn keep track.

Gardyn tells you when your muscadine grape needs water based on your local weather, reminds you to feed and prune in season, and keeps every harvest and photo.

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General guidance, not medical or veterinary advice. Poison Control (US): 1-800-222-1222. ASPCA Animal Poison Control: (888) 426-4435.