Yellow Mammoth
Variety
created by Möwe at 23.02.2026
Growth habit
lifespan: perennial
growth habit: upright
Spring variety
Color
Flower yellow
Resistances
Winter hardy
Location
planting: outdoor
light: sunny to semi-shady
Soil: permeable soil
Sowing
Harvest
Harvest
J
F
M
A
M
J
J
A
S
O
N
D
1ST YEAR
FOLLOWING YEARS
The spring crocus 'Yellow Mammoth' (Crocus vernus 'Yellow Mammoth') is an upright growing garden plant. In a sunny to semi-shaded location, it produces yellow flowers from February to March, which have a funnel-shaped form. The flowers give off a pleasant scent.Its leaves are a beautiful dark green color and linear in shape. Crocus vernus 'Yellow Mammoth' reaches a height of 15 cm and a width of about 5 cm. A well-drained, nutrient-rich, sandy soil is ideal for it. However, it also thrives in a pot. The spring crocus 'Yellow Mammoth' is frost-hardy.
Non hybrid
Frostproof
Location and soil Early-flowering botanical crocuses thrive best in sunny spots in the garden, while the autumn-flowering crocuses also do well in semi-shady spots. The large-flowered hybrids, i.e. the classic garden crocuses, prefer a sunny to semi-shady location. However, it is important to know that the longer the location is shaded during the day, the sparser the flowering will be. What they all have in common is their preference for well-drained soil, as waterlogging causes the tubers to rot. While the spring-flowering species also thrive in sandy or stony soils, the autumn crocuses prefer a good garden soil with a clay content. For early bloomers, on the other hand, you should improve heavy soil with a little sand. Planting The best time to plant spring-flowering crocuses is from October to November, while fall-flowering species are best planted in August. The planting depth for spring-flowering crocuses is six to ten centimetres, as is the distance between the bulbs. Autumn-flowering crocuses are planted a little deeper because of the larger bulbs. As crocuses use their traction roots to access nutrients and moisture from deeper soil layers over time, it is not a problem if the tubers are planted relatively shallowly. Always place about ten bulbs next to each other, as the small flowers are best displayed in groups. If you want to turn your lawn into a crocus meadow, a loose, random distribution is recommended. The golden crocus (Crocus flavus), spring crocus, small crocus and elfin crocus are particularly suitable for growing wild. They form dense clumps that should be divided after a few years. Care tips Crocuses do not require any special care once planted. It is important not to cut off the leaves immediately after flowering. They should only be removed when they wilt, otherwise the plants will be weakened and die more quickly. Therefore, if you have planted crocuses in the lawn, you should wait until the leaves have yellowed before cutting them back. If necessary, fertilize in early spring as soon as the leaves sprout. An organic liquid fertilizer that is applied with the irrigation water is suitable.
Light requirement
Sunny
Water requirement
Moist
Soil
Medium (loamy)
Nutrient requirement
Medium
Plant distance
6 cm
Row spacing
6 cm
Seeding depth
6 cm
No antagonistic plants
Root Rot
Septoria
Grey mold
Angular leaf spot of cucumber
Voles