Do you mean trees started from seeds of Jonathon and Yellow Delicious or those trees on seedling rootstock.

If they were started from seeds they probably aren't worth planting for you as fruit will likely no be very useful and certainly not at all like parent apples. If they are on seedling rootstock they will require more space although both varieties are naturally somewhat dwarfing.

Jonathans seem to be more susceptible to scab around here, and also really, really need to be thinned to get big fruit (not that a Jonathan ever gets big). Great flavor though.

H-man,

I think they are on seedling rootstocks. I'll check if they look like they are grafted.

Dz - where are you located? Intensity of disease can be more or less, depends on locations. Thanks for the warning, though.

I'm in S PA. Seedling rootstocks mean you have an apple tree, period. Good for bloom, usually, good for making juicy apples, maybe.
If you get 100 seedling trees and only save the ones that produce good fruit, then you can cut the other 98 down.

If they turn out to be seedlings, I will (attempt) to graft a couple of varieties I like on them instead.

I don't have a lot of space left in my yard so I have to be selective and creative!!! Thank you for your advice.

Mamuang:

I grew Jonathan as a child since the lot my parents bought came with some very old standard apples left from a turn of the 20th century orchard.

I love Jonathan! Despite the fruit being small, it is great
to eat fresh or cook with. A bit tart but nice. It is not a
great storage apple as susceptible to the dreaded "jonathan spot" in cold storage. Keeps fine til
Nevember.

Golden Delicious has fallen out of favor yet I still enjoy one grown East of the Rockies (big difference than those
grown on the west coast). This variety really needs to
be hand thinned as small sized goldens usually never amount to a quality apple on flavor. Great apple to cook
with or eat fresh. Makes a great pie or strudel, just cut
way back on sugar when you cook with them.

If they told you what the varieties are, I'm sure they are giving you grafted trees. The real problem might be, you probably won't be able to find out what the rootstock is, so you will have no idea how big they will get. Dwarf rootstocks will only grow to about 9-10 feet, semi-dwarf will grow anywhere from like 12-15 feet, and seedlings can grow 30 feet high. And the trees are typically just as wide at maturity as they are high -- they kind of grow in a globe shape unless they are well pruned to do something different.

Also, the bigger the tree (based on the rootstock), the longer it takes to crop. Dwarf trees will begin producing apples at 2-3 years old. Seedling trees can take 8-9 years. Semi-dwarf is in between, maybe 4-5 years. I hope you are patient.

Both of these apple varieties are great for eating and for cooking, also excellent for juice. Neither one keeps very long -- you'll need to use them up before winter, or sauce or juice them and freeze.

Go ahead and plant them, and have fun!

Thank you everyone for your input. I help me have a better idea what I am getting into.

I'll get them and see what they are, grafted or not grafted. I keep all my trees 10 ft and under, so far, so good.

Anyway, I will plant them. If I change my mind later, I could dig them up and give them away.