Which lemon tree has thorns

Because the undesirable rootstock's sprouts are very thorny, thorniness has become associated with undesirable or "bad" growth. And, if it comes from below the graft union, it actually is. If the thorny growth originates from above the graft union, however, it is your desirable Meyer lemon or whatever type of citrus is being grown despite the fact that it has thorns on it.

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In truth, the evolution of thorns on citrus trees, like those on Key lime and Meyer lemon trees, is very similar to that of animals like porcupines and hedgehogs — for protection. Thorns protect the delicate juvenile lime lemon tree from hungry animals that want to eat away at the tender leaves and fruits. As citrus trees grow and mature some lose their thorns while some retain them.

Some of the factors that contribute to your lemon tree being thorny are 1 Variety, 2 Rootstock, and 3 Canopy Sprouts. This condition thrives in areas with cool, windy and wet winters and springs. To prevent this disease, prune and fertilize in the spring and summer to reduce the amount of fall growth. Prior to the cool, rainy season, apply either Bordeaux spray or fixed copper to the lemon tree.

In addition, when working around the tree, put on safety goggles, thorn-resistant gloves, long sleeves, long pants and closed-toe shoes to avoid puncture wounds. While it is not true that lemon tree thorns poison the unwary human or beast, puncture wounds are easily infected and should be cleaned immediately.

It won't hurt the tree if you snip off the thorns while removing rootstock or water sprouts. To prevent the spread of diseases, sterilize your cutting tools by dipping the blades in rubbing alcohol or Lysol and letting them air dry.

Alternately, wipe the blades with a rag dipped in the sterilizing solution. Home Guides Garden Soil Care.