Better draining soil and remove the stake.

Water it since it looks desperate for water now and then change the mix..In fact, I would repot in asap and hope for the best..When I see a citrus wilted that severely, I worry about a whole tons of dead fine roots and then added water after it's too late for the roots to work to cause rot issues..Don't be surprised if you loose a branch or twigs here and there at this stage(

@Mikerno, its not wilting, that's just the angle of sunlight

@pip313, I'm keeping on the stake right now because its windy...

Also, how do I make the "Gritty Mix"

use a 5-1-1 mix. It is a lot lighter in weight. This will be important since you will need a very large pot for it to get to a size to fruit well with that big of a fruit

Why not plant it in the ground. Every thing grow much better in the ground.

5-1-1 is lightweight

gritty is heavy

how big of a container do you want? Are you going to prune the tree to keep it small?

i much prefer heavy medium because after you've had a tree blown over and a major branch broke you don't want it to happen again.

Eventually I will plant it in the ground

If you want a durable mix that outlasts the other, pick the gritty first...You might find it a lot lighter than you think if you use a plastic pot..Stay away from those heavy ceramic ones that one can barely lift even empty....

If you are going to plant it in the ground I would use a 5-1-1 mix and plant it in a shallow large diameter pot so that when I put it in the ground I can plant it on top of the soil in a 10 inch mound. Give it plenty pf dirt in diameter and she will grow in with the trunk well above the water line of the rest of the yard. Trees break limbs mostly when they get blown over off balcony rails. I tie my balcony rail trees to the surface so that can't happen.

Very nice Doc, what's your care regimen and how long did it take to start fruiting? Also what kind?

I just got a grapefruit myself Liam (was just labeled 'White Grapefruit') so I'll be following this thread in the hopes of gleaning some good info! I wonder what size 'big container' further up the thread was referring to, 15 gallons?

I believe this is the 3rd season of fruiting. It was about 6 feet tall when planted. I plant them big, because, at my age, I don't have a lot of years to wait for growth. I feed my citrus heavy, beginning in February, again in May and September. Arizona's Best granular fertilizer spread heavily at the drip lines. I also add some Epsom acidifying pellets to the top of the soil about 1-2 times yearly. I hit them with Miracle Grow liquid fertilizer occasionally throughout the growing season. And about 3 times during the season I foliar spray with Foliage Pro. So far, the grapefruit (Rio Red) seems to alternate year bear. Only a few fruit last year, but this year and 2 years ago there are lots. The tree was covered in blossoms this past spring.

Valencia is the only orange I like. It has lots of flavor, sweet and tart.

I like grapefruit too, it has a very pleasantly pungent intoxicating smell. But it may not be healthy to eat too much grapefruit, it contains higher levels of furanocoumarins that can cause an increased risk of skin cancer in the presence of high levels of sun exposure.

@BahamaDan, unless you have a dwarf grapefruit you can't plant container

@ BahamaDan, I guess white grapefruit is where pink & red sprouted from white, but can I keep it dwarf?

I suppose it would depend on what 'can't' refers to, as I have seen grapefruit trees in containers fruiting well, but I agree they would grow much better in the ground.

You are correct in that the pink and later red varieties all originated as mutations of the white and then subsequent mutations of those, similar to how Cara Cara Navel's pink flesh arose as a mutation on a regular navel tree.

You can keep any citrus dwarf with judicious pruning, but some grow faster or larger than others (rootstock affects this too) and will be harder to keep smaller than others. Also since citrus tend to tip-bear you may have to sacrifice some of the next year's fruit to keep the tree small by trimming branches. A rotation system where you prune only a part of the tree each year helps in this situation.

@ BahamaDan, hmmm, dwarfing looks hard for Grapefruit, the nurseries trees here were only 3 years old & 4 feet wide and 5 feet tall

Yep as I said some varieties of citrus would be harder to keep small than others. My first preference would be to plant all my trees but my soil is abysmal: basically sand barely a few inches thick on top of a hard caliche (limestone) bedrock so very alkaline and nutrient poor, which is why I have my citrus in containers.

If I can find some on alkaline-tolerant rootstock perhaps I'll try planting one or two, but I don't look forward to pickaxing the holes.

@ BahamaDan, I looked & saw that it does good in Sandy soil, is that alkaline?

@ BahamaDan, I think this is useful... http://citruspages.free.fr/trifoliates.html

"C-35 citrange is a common citrus rootstock. It reduces the size of the tree while not limiting the production. It is used widely on navel oranges because of its excellent yield efficiency i.e. for each cubic metre of canopy volume, it produces more kilograms of fruit than other rootstocks. Good performance has also been obtained on grapefruit, valencia oranges and clementines" - Citrus Pages, Hmmm looks like it forces the tree to be dwarf to semi-dwarf with the yield the same as a full size, the roots are smaller to!

Why do i have to live in literally the worst soil in the US!

Thread to help... http://forums.gardenweb.com/discussions/3489190/salt-and-clay-say-hey

@ Mikerno, should I change it to miracle gro citrus, cactus & palm mix? It's currently in miracle potting mix

"Why do i have to live in literally the worst soil in the US!"

Probably because that is where the JOB is

Liam, I personally would never use that mix, unless there was a way to use it to my trees advantage, not even if I lived down south..I just would not want the risk the chance of root rot within a short period of time) If it was the only stuff I had access to, then I would amend it with lots of pine bark and perlite...For me, that mix held up too much water far too long..I could never understand how a company can claim that stuff is for plants that require superior drainage...?

When it comes to the all mighty dollar the truth no longer matters mike

Get one of those jackhammers with a digging tool and bust up your caliche. Seriously. That's how you do it. Do about 100 sq ft. It will be a project but you only do it once, or just hire a landscaper. Then, backfill the area with compost & good soil and plant your tree in the dirt. When you drive around & see people with lovely huge citrus in caliche areas, that's how they did it. It works. if I were in your shoes, that's what I would do and no even bother with pots. Your potted grapefruit will never rival an in-ground one in terms of productivity or vigor.

Interesting, my rio red does not alternate production. But, I think it isn't a graft (has no graft line & tag does not indicate a graft) so maybe that's why. I do make sure to get all the fruit picked at least 2 weeks before it blooms to encourage fruit set. If you're leaving fruit on it when it blooms, that could absolutely be why it alternates. No telling, sometimes they just do what they want.