MSU Apple Maturity Guide
These are the maturity levels used to classify apple varieties for long-term storage.
Fresh market fruit would have higher Brix levels, lower pressure and higher starch readings.
| Brix Guide | Low | Fair | Good | Excellent |
| All Varieties | <11 | 11 | 12 | 13 |
| Honeycrisp | <12 | 12 | 13 | >14 |
Apple Maturity Guide |
||||||||
Variety
|
Firmness |
Starch |
Starch |
|||||
% Clearing of Flesh |
% Clearing of Core |
|||||||
Short-term CA |
Mid-term CA |
Long-term CA |
Export CA |
Mature |
Over Mature |
Mature |
Mature |
|
Braeburn |
16 |
17 |
18 |
|
3 |
7 |
0 |
100 |
Cortland |
14 |
15 |
16 |
|
4 |
6 |
35? |
100 |
Empire |
14 |
15 |
16 |
18 |
3.5 |
6 |
15 |
100 |
Fuji |
16 |
17 |
18 |
|
3 |
7 |
0 |
100 |
Gala |
16 |
17 |
18 |
|
3 |
6 |
0 |
100 |
Golden Delicious |
15 |
16 |
17 |
|
3 |
6.5 |
0 |
100 |
Honeycrisp |
15 |
16 |
17 |
|
3.25 |
7 |
5? |
80 |
Idared |
14 |
15 |
16 |
|
3.5 |
6 |
10 |
100 |
Jonagold |
15 |
16 |
17 |
|
3.5 |
5.5 |
10? |
100 |
Jonathan |
14 |
15 |
16 |
|
3.5 |
5.5 |
10? |
100 |
McIntosh |
14 |
15 |
16 |
|
5 |
7 |
40 |
100 |
Mutsu |
16 |
17 |
18 |
|
3 |
6 |
0 |
100 |
Northern Spy |
16 |
17 |
18 |
|
3 |
6 |
0 |
100 |
Red Delicious |
16 |
17 |
18 |
|
2.5 |
5 |
0 |
80 |
Rome |
15 |
16 |
18 |
|
3 |
5.5 |
5 |
100 |
Spartan |
17 |
18 |
19 |
|
4 |
6 |
35? |
100 |
Winesap |
17 |
18 |
19 |
|
2.5 |
6 |
0 |
80 |
Granny Smith |
|
|
|
|
|
|
|
|
