This dusty-looking plant grows on dry places such as rocks, or on the top of old walls or on hedge-banks.
The flowers of the Hairy Rock Cress are white and very tiny. They have four petals, which are not at all attractive, and they grow on each side of a tall spike. After the flowers are withered, the seed-vessel, which is in the middle of each flower, grows into a long thin pod like a needle. The green needle remains at the end of the flower-stalk, and you will see ever so many of these slender green pods standing straight up round the flower-spike.
You will easily recognise this plant by these green needle pods.
The leaves of the Hairy Rock Cress are very rough, and have coarse hairs all over them. Some are long and narrow, and cling closely to the stem. Others are broader, and they have short stalks and wavy edges. Those leaves which have stalks usually grow close to the ground at the foot of the main stem.
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