These McIntosh growth stages were recorded at the Peach Ridge Weather Station in Sparta, Michigan.  The stages were recorded since 1976 and are the dates when 80% of the fruit buds are at that stage except for 1st Green which is the date when the 1st bud had visible green tissue.
Growth Stage Reports Philip Schwallier & Amy Brown
1999 Peach Ridge Final Version May 9, 1998
Date Normal 1999 1998 Growth
Stage		 Normal
Date		 1998
Date		 Days Ahead
of Normal		 Normal Number 
of Days in Stage
3/27
 
 
 
          
3/28
 
 
 
1st Green
4-12
4-2
10
4
3/29
 
 
 
Green Tip
4-15
4-8
7
3
3/30
 
 
1st G.
1/4" Green
4-19
4-10
9
3
3/31
 
 
 
1/2" Green
4-22
4-14
8
4
4/1
 
 
 
Tight Cluster
4-26
4-24
2
5
4/2
 
 1st Green
 
Open Cluster
5-1
4-28
3
4
4/3
 
 
 
Pink
5-5
5-1
4
4
4/4
 
 
G. Tip
King Bloom
5-9
5-4
5
2
4/5
 
  
 
Full Bloom
5-11
5-5
6
5
4/6
 
 
 
Petal Fall
5-16
5-9
7
 
4/7
 
 
1/4" G.
          
4/8
 
Green Tip 
 
          
4/9
 
 
 
          
4/10
 
 1/4" Green
 
          
4/11
 
 
 
          
4/12
1st G.
 
 
          
4/13
 
 
1/2" G.
          
4/14
 
 1/2" Green
 
          
4/15
G. Tip
 
 
          
4/16
 
 
 
          
4/17
 
 
 
          
4/18
 
 
 
          
4/19
1/4" G.
  
Tight C.
          
4/20
 
 
 
          
4/21
 
  
 
          
4/22
1/2 " G.
 
            
4/23
 
  
Open C.
          
4/24
 
 Tight Cluster
 
          
4/25
 
 
 
          
4/26
Tight C.
 
Pink
          
4/27
 
 
 
          
4/28
 
Open Cluster
 
          
4/29
 
 
 
          
4/30
 
 
 
          
5/1
Open C.
 Pink
 
          
5/2
 
 
King B.
          
5/3
 
  
 
          
5/4
 
King Bloom 
Full B.
          
5/5
Pink
 
 
          
5/6
 
 
 
          
5/7
 
 
 P. Fall
          
5/8
 
 
 
          
5/9
King B.
Petal Fall
 
          
5/10
 
 
 
          
5/11
Full B.
 
 
          
5/12
 
 
 
          
5/13
 
 
 
          
5/14
 
 
 
        
5/15
 
 
 
          
5/16
P. Fall
  
 
          
5/17
 
 
 
          
5/18
 
 
 
          
5/19
 
 
 
          
5/20
 
 
 
          
5/21
 
 
 
          
5/22
 
 
 
          
5/23
 
  
 
          
5/24
 
 
 
          
5/25
 
  
 
          
5/26
 
 
 
          
5/27
 
 
 
          
5/28
 
 
 
          
5/29
 
 
 
          
5/30
 
  
 
          
5/31