Citrus, on average, is not a very cold hardy plant. I don't know what your low winter temps are but if your temps get below about 22F it is either a variety of tangerine or kumquat. Below about 15F it will be a kumquat. All citrus leaves look basically the same and most have thorns. If your low temps do not get below about 25F it could be a sweet orange or a grapefruit. It is not a lime and probably not a lemon if temps fall below about 28F for an extended period of time.
Most citrus has thorns but check and see if the thorns on this tree are BIG, dangerous sized thorns about 2 inches long, maybe bigger.I'm in zone 8b Southeast Coastal Georgia where are typical winters don't get many days below freezing. Having said that and knowing that the weather patterns are changing every year, I'll just have to see if it bears any fruit and what they might be. I just saw a piece of fruit way up at the top of the tree. It's dark green, round, a little smaller than a tennis ball and the skin looks bumpy. Does that help identify it?
The thorns are definitely dangerous, and I believe they are at least 2 inches long. Does that help identify which citrus tree this might be?Most citrus has thorns but check and see if the thorns on this tree are BIG, dangerous sized thorns about 2 inches long, maybe bigger.
Yes, it makes clear what you have growing there. You are the proud owner of a Trifoliate Orange tree/ Bitter Orange/Sour Orange tree. It grows small, bitter, knobby, lumpy fruit, all but inedible. It is used for rootstock to graft other citrus onto as it is very cold hardy. About the only thing you can do with this plant is to graft other citrus onto it but in actuality, it would be best to take it out. What has happened in the past was the previous owner of the house had a grafted citrus tree but it died or was killed and the rootstock survived and grew into that tree. People do actually grow them on purpose for security hedges and you can make juice out of the fruit but it's not very good at all.The thorns are definitely dangerous, and I believe they are at least 2 inches long. Does that help identify which citrus tree this might be?
It is a trifoliate orange (Poncirus trifoliata). It does, according to the pictures have three leaflets and in many cases trifoliate orange is a bumpy fruit. The large thorns and the growth habit shown in the pictures only add to my identification of this plant. And some trifoliate oranges have 5 leafletsThe plant pictured is not a trifoliate orange (Citrus trifoliata, syn: Poncirus trifoliata). Trifoliate orange is a deciduous species with smaller leaves divided into three leaflets.
What is pictured is an evergreen Citrus sp. that most likely will produce an edible fruit. By the way, bitter or sour oranges are also not the same as the trifoliate orange. Rather they are cultivars of orange that are grown primarily for their aromatic oils used for perfrumes,marmalade, Earl Grey tea, and other products.
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