Cook pearl couscous in a large an of boiling water following packet instructions. Drain, rinse well. Drain again and place in a large bowl.
Meanwhile, blanch peas, snow peas, and asparagus for 1-2 minutes each, until just tender. Add peas to couscous. Diagonally slice snow peas and asparagus. Add to couscous with snow pea sprouts, almonds and mint.
Mix together lemon juice and oil. Add to salad and toss to combine.