I've been taking full advantage of asparagus season, my fridge is constantly stocked with those tender thin stalks. (prouditaliancook.com)
If thin stalks are all that is available, adjust the roasting time accordingly (likely 8 - 10 minutes total). (susanaugustine.com)
You can skip the places where the stem begins to branch into thinner stalks — the skin there is usually is tender enough (although I peel it all off, being a crazy perfectionist). (golubkakitchen.com)