What's up with my rosemary?

Last years woody growth has curled over and pointing down.
This years new growth is growing straight up.
Two out of the four rosemarys are like this, but they aren't next to each other.
They are all 3 years old, in sandy clay soil.
I have a lot of moles and voles, could this be the problem?

P.s

the winters are quite mild but overnight frost in January,
I thought it might be the north wind but there is one rosemary out of the four in a row that has grown straight up no problems and is now 3ft tall.
I can only find info on rosemary leaf curl, but the leaves are fine it's the stem that's curling.
I can't figure out how to edit so I put this as a reply instead :)

There are prostrate varieties of rosemary, maybe you have one of those?  If the leaves themselves all look healthy I wouldn't worry too much.

PS "edit" is hidden behind the three dots to the top right of your post.

They look fine to me! They might prefer different spot. I grow them north to you against a south facing wall. There they're huge. But that took 5 years at least. If this is second year, i wouldn't worry, just take cuttings in winter of your tallest one and give it a sunnier spot. They don't really appreciate wind either. I grow them in a hedge row, and they're doing fine, but that is a place where there is not a lot of wind.
I grow them in the production field as well it's windier, they're backed by a wall of sage to imitate a wall, but the wind is affecting it.
They're a very adaptable plant, but easy to propagate from cuttings.

I read rosemary can take over and you have to be careful with it.  I have not had good luck with it.  I grew it for about 3 years and I thought it was doing well ( didn't look anything like your pictures)  It grew to about  2 feet tall, and maybe 6 inch diameter.  After about 3 years it died.  one branch at a time dried out and died  I tried watering it more, pulled the mulch away, fed it, nothing I did saved it.  This year I have planted 3 more rosemary. The trailing rosemary in my herb spiral is doing very well.  I don't know what the other  two are called.  One is kind of woody stems and the other has softer stems.  The softer stem one is doing ok, it is growing slow.  The woody one looks exactly like it did when I planted it 2 months ago.  It looks fine, green and healthy looking, but hasn't grown at all.  My plan is to start some cutting, and plant it several different places and try to find a place it will like.  Gardening always keeps me on my toes.

Thanks for weighing in everyone. I love this forum.

Besides the curling stems they look healthy so I'm not worried, I'm just a little obsessed with finding out why and how a thing happens. If I don't find a cause it bothers me.

Jen Fulkerson- the thing with rosemary is it doesn't like overwatering. It can turn brown and die off a branch at a time so it looks like it's drying out, but that's actually a response to waterlogged conditions. It prefers to be ignored and neglected so there's no need to feed or water it once it's established after the first year. Good drainage is important though.

When I find something similar happening with my rosemary it is usually touching the ground or will touch the ground when it grows longer.

This will cause the rosemary bush to make a new plant.  I don't want any new plants so I pull them up and cut them off.

Anne! We always want new plants! For ourselves, to experiment with, to give as presents.. and when they’re sick of our presents we secretly plant them in their gardens anyway when they’re not looking!!
Don’t give newbies the idea something like too much plants exists.;)

Anne Miller wrote:When I find something similar happening with my rosemary it is usually touching the ground or will touch the ground when it grows longer.

This will cause the rosemary bush to make a new plant.  I don't want any new plants so I pull them up and cut them off.

This is the same pattern that my rosemary bushes tend to follow: new growth sticks straight up or out and stays that way for most of the growing season. Older growth starts to droop down and many branches will end up getting covered by mulch during the winter. The following spring I have to cut them off the bush and dig them out of the mulch/dirt because they're rooting and trying to create new plants! I found a rosemary baby almost 5 feet away from one of my bushes, and when I went to dig it up and move it found that it was connected to the main plant by a huge runner!

I've changed how I trim my rosemary every year to try and help them grow. Since the older growth tends to bend down towards the dirt, I trim my plants starting from the bottom and take off old branches until the newer growth is no longer being crowded and pushed around. I just trim the tops for shaping. Ever since I started pruning this way I get massive growth all spring and summer!

I've found that rosemary branches will often sag as the stems get woody and heavier; while the newer growth on the ends of the branches will still grow upright. When this starts to happen, I will usually prune the bush pretty hard to encourage a growth spurt and more ramification in the branches. From my understanding, when the branches get heavy and start sagging, they begin to crack at the "joints" where they attach to the central stem. This can open the plant to fungal infection or other illness and shorten it's lifespan. I don't know how common/accurate that actually is but I know that the bushes I don't prune hard typically live 3-5 years, while the ones that get cut back by half (or more) have lived twice as long, with many of them still going. So it leads me to believe that there is some truth to it.

Also, the soft & semi hard wood cuttings tend to root easily in water so, after one of the pruning sessions, I often stick a handful of cuttings in a glass of water in the window to root. Then I can plant them out or pot them up to sell.