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It rained cats and dogs last night and our field is very wet. The plants are
growing well. What do you notice about this scene compared to
past field pictures? Well, the important point is that you can't see
the soil between the rows now. Why is that important? Two reasons,
sunlight can't hit the soil surface now to dry out the ground and weeds
can't compete well with the larger sunflower plants.
I mentioned at an earlier date that sunflowers have an alternating arrangement of leaves on the stem. This is an excellent example of alternating leaves. As you move up the stem, a leaf is at about a 90 degree angle from the one below it.