The Tropical Fruit Forum

Thanks.  I can't see buying urea whenI have24  pounds of Jacks 25-5-15 plus 95 pounds left of amonium sulfate

I have 100 pounds of amoniumsulfate.  will that work.

Fruit is distroyed at 28F so all fruit must rippen before temperatures drop below freezing in fall.

Sorry.  I miss read it and saw knuckle

I did a cold hardiness test on my very large inground seed grown Fukushu kumquat.  are lows reached 5F,6F,1F,4F.  the results.

Crush them by hand.

My wife will divorce me if I ask for any seeds.  She said the citrus must go. Any tree that does not set fruit will be tested for cold hardiness this winter in my zone 6b climate.  Like a deck of cards marriage needs 2 hearts and a diamond and ends with the need for 2 clubs and a spade

I'm quite old and, over the years, I've seen a fair number of ambitious backyard citrus breeders who decide that crossing varietyX with varietyY will doubtless produce a desirable result. Invariably, everything then goes quiet and we hear no more.
The trouble is that it takes so long and there are plenty of pitfalls along the way. First your cross-pollination has to succeed, then a hybrid plant has to grow to maturity and finally it needs to be evaluated, compared to existing types, and propagated. Unless you have plenty of time, patience, money, growing space - and luck - most people fail to produce anything of value. I include myself in this group! I think it is only the big institutions that are really capable of spending the years developing a new citrus variety, and they aren't interested in backyard growers.
So, I wish you luck and hope you prove me wrong!

Very well put.

Marumi are NOT true by seed.

My in ground outside 9 foot tall 5 foot diameter seedling Fukushu kumquat tree produces up to 30 fruit about 1 inch diameter.

My C35 rootstock died under my NZL from cold

Meiwa is the best by far.  It can be picked while still half ripe an have a sweet peel with a somewhat sour flesh.  You can leave it on the tree until orange for a sweet interior.  The Nagami, Fukushu, Nippon, and Indio need to stay on the plant till fully ripe to have a goo tasting peel. 

Root stock choice will make a big difference within same varieties.