I'm just guessing and I'd guess , where they're native wild ones some groves may have some that are a couple of hundred years old, though I'm not sure they have the normal growth rings, which botanists and tree specialists use to determine the age of trees. I guess in some cases some plants are "estimated" by the height or girth of trunks by measuring the height of girth and then using an average yearly growth rate from observations, they may guess the age.

A single stem will live about 125 years, but a cluster after the main plant produces offsets can be 1000s of years old. Either way, one plant can live longer than any of us. I have articles for every cycad cultivation subject anyone can think of but because of the rules of this forum, I can't post my website address. Mainly, good drainage is most important. Full sun is best for higher energy levels, which these levels determine growth rates and coning. Some people will tell you they want to be dry, but this is far from the truth. I water mine every 2 to 3 days depending on the time of year. I fertilize with Cycad Special which, for me can give me up to 4 flushes of leaves each year. Thats about it for the short version.

I found some well written articles on Cycad Culture at this Link,

Here is a link that might be useful: Cycad Care

Thanks JW Madison for that, at least other people are allowed to post my links. TB

TB,
You're Welcome, When I first started growing Cycads I was at a loss until I found these pages.

Also found a great article on Cycad fertilizers at link below,

(Will bookmark this thread so it can be referred to again :-)

Here is a link that might be useful: Cycad Fertilizer

Thanks, guys...is this site run by Vladamir Lenin or someone similar? Or are the Capitalist "Barrons" not allowing transaction of helpful information because their sponsors might "whine"? :/0))))

coastiemedic - LOL...

GW has a policy in place for businesses using these forums. I'm sure it's primary directive was to reduce spam, but sometimes it seems that it keeps relevant info from getting posted. Well, at least by conscientious site owners, if you have no connection to a specific site you can post a link ;-)

I think you need to give these guys a break that run this now. The rules are given out when you sign on to be here, and if you try to be honest you do your best not to break the rules. Anyone that has a site that sells anything, the link can't be posted and people who sell for a living can't advertise plants. Now, if I had my articles in a strictly educational website, then there wouldn't be a problem, but you can still hit the back button, or click the link for fertilizer and you will find something for sale. I'm president of the Cycad Society. If I put in a link to the society site and we had my articles in there, then this would be alright, while I guess technically, we are trying to sell memberships, but I think they would let that one slide. What does bother me though, is that hobbiest can talk about trading things and selling small things and they get away with that.
At least, from what I hear there are new people running this board. There used to be a guy named Spike that everybody ragged on, and I understand why. All I mentioned one time was the big sale at USF Botanical Garden in Tampa and that our society (locally the Central Florida Palm and Cycad Society)would have a booth. It was a thread where everyone was talking about the sale and who was going, and this Spike guy sent me a fairly nasty letter. Well, I was off this forum for about a year. I help people on about 8 different forums, which includes my own cycad forum and for what it is worth, the people on this forum didn't get my help for a year. I kept looking at all these easy questions about people and their little sagos in the house and nobody would answer their questions. Now, I may not be the best expert in the world on cycads, but if it is any kind of cultivation question, I don't think there is anyone who can ask me a question that I can't answer.(unless it requires a picture, or if you don't give me enough information, like "my cycad is dying, whats wrong with it?") I would like to see more questions about unusal cycads, I do get a little tired of having only sago questions, where I have experience growing over 200 species. I do feel that in many cases, most people who get into cycads start with a sago and go from there. The King sago, (Cycas revoluta) is the most commonly grown cycads in the world. I think most people don't realize what other kinds of cycads are out there or they would try others. Some are easier to grow, some are more cold hardy, and most don't get Asain scale. Cycads can have the typical fountain form with dark green leaves if you require that look, or you can have something that looks a lot like bamboo, which is upright growing, and you have cycads that look like ferns, like stangerias, bowenias, and zamias like Zamia fischeri.
Anyway, I'm trying it again and will check in every few days just to see if there is some interesting cycad question. I've grown 275 species of palms, so I could probably field many of the palm questions, but I don't think I'm that good with palms compared to many other people in my local society. Also, I other things to do like take care of 30,000 plants all by myself, and everything else it takes to make a living. Anyway, it is good to be back.

Well Said!
I like to see the various Cycad pictures that get posted here :-)

Fortunately, ( or unfortunately, as the case with rocks glued to the soil) many individuals first experience with Cycads is the Sago and their experience with this will determine their further intrest in Cycads.

Maybe someone at GW could initiate a FAQ Section on Sago Care ?

I have a sago palm for about 6 months...the leaves are turning brown/yellow and I'm not sure what I'm doing wrong. I keep the plant inside becasue of the high wind and extreme temps where I live. Have any ideas on what I should do?