Weeping bolete or Slippery jack
How they differ, how to recognize them and which is more dangerous — a mushroom comparison
The short answer
Weeping bolete and Slippery jack are similar species that can be mixed up while foraging. The main visible difference: use: Weeping bolete — cook fresh, drying, pickling, Slippery jack — culinary, pickling, drying, freezing. The mushrooms also differ in the following features: cap color, cap shape, taste.

Weeping bolete
Suillus granulatus

Slippery jack
Suillus luteus
📊 Comparing characteristics
| Characteristic | Weeping bolete | Slippery jack |
|---|---|---|
| Edibility class | Weeping bolete Edible | Slippery jack Edible |
| Season | Weeping bolete SpringSummerAutumn | Slippery jack SpringSummerAutumn |
| Use | Weeping bolete Cook freshDryingPickling | Slippery jack CulinaryPicklingDryingFreezing |
| Size | Weeping bolete Medium (5–15 cm) | Slippery jack Medium (5–15 cm) |
| Cap color | Weeping bolete YellowBrownOrange | Slippery jack BrownChestnut |
| Cap shape | Weeping bolete Convex | Slippery jack ConvexFlat |
| Cap surface | Weeping bolete Slimy | Slippery jack Slimy |
| Taste | Weeping bolete Mild | Slippery jack Mild |
| Smell | Weeping bolete Pleasant | Slippery jack Pleasant, mushroomy |
| Flesh color change | Weeping bolete No change | Slippery jack No change |
| Hymenophore | Weeping bolete Pored | Slippery jack Pored |
| Stem | Weeping bolete Central | Slippery jack CentralSolid |
| Ring (veil) | Weeping bolete No ring | Slippery jack Ring present |
| Volva | Weeping bolete No volva | Slippery jack No volva |
| Substrate | Weeping bolete Soil | Slippery jack SoilConifer needle litter |
| Nutrition type | Weeping bolete Mycorrhizal | Slippery jack Mycorrhizal |
| Partner trees | Weeping bolete Pine | Slippery jack Pine |
📅 Seasonality
Weeping bolete
Fruiting season
May – November
Slippery jack
Fruiting season
May – October
🔬 Morphology
Cap
Weeping bolete
Cap 3-10 cm across, hemispherical with an inrolled edge when young, becoming convex-flat with time. The color is yellow-chestnut, honey-brown, reddish-brown, darker when young, fading to ocher-yellow with age. The surface is very slimy in wet weather, smooth, shiny. Glossy in dry weather. The skin peels easily from young mushrooms, with more difficulty from old ones.
Slippery jack
Cap 4–12 cm across, convex in young mushrooms, later flattened-convex. The surface is covered with a thick layer of slime — especially in wet weather. Color chocolate-brown or chestnut, yellowish brown when dry. The margin often bears remnants of the partial veil.
Hymenophore
Weeping bolete
Pores and tubes — the tubes are attached to the stem or slightly decurrent. In young mushrooms they're pale yellow, with characteristic tiny whitish droplets of milky juice. Over time the droplets dry, leaving granular brown dots on the tubes. With age the tubes turn yellow-olive. The pores are small, the same color as the tubes. Spore print ocher-brown.
Slippery jack
The hymenophore has tubes. Pores yellow, small, regular, turning yellow-green with age. The tubes are attached to the stem or run slightly down it. When pressed, the pores turn slightly brownish.
Stem
Weeping bolete
Stem 4-8 cm tall, 1-2 cm thick, cylindrical, even, without a ring. The color is yellowish, and in the upper part with characteristic tiny yellow-brown granular dots — dried droplets of milky juice. This is the main diagnostic feature of the species.
Slippery jack
Stem 5–10 cm tall, 1–2 cm thick, solid, cylindrical. Yellow and granular in the upper part, brown or violet-brownish below the ring. A characteristic purple-brown membranous ring — a remnant of the partial veil and one of the key diagnostic features of the species.
Flesh
Weeping bolete
Flesh firm when young, softening with age, creamy yellow. When cut it doesn't change color — unlike the velvet bolete. The smell and taste are mild and pleasant, with a slightly fruity note.
Slippery jack
Flesh yellowish or pale cream, firm in young mushrooms, softer in mature ones. Turns slightly pink when cut or stays unchanged. The taste is mild, pleasant, slightly sourish. The cap skin peels off easily together with the slime.
Smell
Weeping bolete
Pleasant and mushroomy with a light fruity note — especially in young ones.
Slippery jack
Smell pleasant, unobtrusively mushroomy, slightly resinous — reflecting its symbiosis with pine. With cooking the aroma intensifies and becomes more pronounced. No foreign unpleasant notes.
📍 Habitats
Weeping bolete
Slippery jack
👀 Similar mushrooms — don't mix them up!
Velvet bolete
EdibleSlippery jack
EdibleSuillus flavidus
EdibleBovine bolete
EdibleSuillus clintonianus
EdibleSuillus placidus
EdibleLarch bolete
EdibleOrange webcap
InediblePeppery bolete
InedibleWeeping bolete
EdibleBay bolete
EdibleSuillus spectabilis
EdibleHerald of winter
EdibleSticky bolete
EdibleCopper spike
Edible❓ Frequently asked questions
Can Weeping bolete and Slippery jack be mixed up?
How to tell Weeping bolete from Slippery jack?
Is Slippery jack edible?
When do Weeping bolete and Slippery jack grow?
Sources
- [1]Вікіпедія (українська)
- [2]Атлас грибів України, Зеров Д.К. (1979)
- [3]MycoBank Database
- [4]Index Fungorum
- [5]GBIF
- [6]iNaturalist Ukraine