The secret to healthy tomato plants? Plant them on their sides! Tomato plants can send out roots all along their stems so planting a leggy tomato plant on its side in a trench maximizes the root system and the amount of water and nutrients the plant is capable of inhaling.
The result is bountiful, big, beautiful tomatoes! So if you planted your tomatoes early and they are getting tall and spindly, no worries. It can be a good thing.