From the Knit Rowan website:
Rowan has teamed up with our favourite woolly character to design an exclusive 25 square picnic blanket. Worked in Pure Wool DK, 100% superwash wool, it’s a b-ewe-tiful design and is available as a free download now.

ERRATA
Quarter-square 1
Row 12 – As row 4.

Finished dimensions:

• Each completed square measures approximately 25 cm by 25 cm (10 inches by 10 inches).
• Completed blanket including borders measures approximately 132 by 132 cm (52 by 52 inches).

Yarn information:
Colorways given are in Rowan Pure Wool DK, however Rowan Pure Wool Superwash DK (137 yards per skein) can also be used.
A - 023 Shamrock
2 skeins
284 yards

B - 057 Dew
2 skeins
284 yards

C - 030 Damson
3 skeins
426 yards

D - 049 Ox Blood
2 skeins
284 yards

E - 012 Snow
4 skeins
568 yards

F - 004 Black
2 skeins
284 yards

G - 036 Kiss
2 skeins
284 yards

H - 013 Enamel
4 skeins
568 yards

I - 051 Gold
2 skeins
284 yards

J - 019 Avocado
6 skeins
852 yards

K - 110 Dust
1 skein
142 yards

L - 010 Indigo
1 skein
142 yards

M - 003 Anthracite
1 skein
142 yards