This is a kumquat tree from seed at about 1 year old. Kumquats are much harder to grow from seed than any other citrus type so your grapefruit tree should do very well. I grew a grapefruit tree as a child 40 years ago and it did well until I forgot to bring it in one night before a hard freeze. It died.

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Meiwa kumquat tree grown from seed

Deleting a double post

This post was edited by poncirusguy on Tue, Sep 24, 13 at 23:23

Cool I'm going to try to keep citrus outside this year with heating pads and heaters on patio.it rarely gets below 20 here in coldest of. Winter.

If you want serious results, you will need to grow you trees under light at an elevated temperature between 75 F to 95 F. My best growth occured while using a bucket light grow setup with the light on a timer for 16 hours per day. I used 13 - 18 watt daylight CFL.

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While your tree is small you will use one bucket with a light in it. The bucket can be lined with aluminium foil or painted high gloss white.

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As your tree gets biger you will eventually have to use 2 buckets and then go to stilts. This really enhances the trees growth and will get you off to a good start.

The link below will send you to a post of my trials with success and point out errors so you can avoid them

Here is a link that might be useful: http://forums.gardenweb.com/forums/load/citrus/msg0320572518736.html

Wow thanks iwill try it