Predicted 2018 apple harvest dates

The 2018 predicted apple harvest dates are roughly normal in south Michigan and a few days early in north Michigan.

Apples on tree.
Photo by Mark Longstroth, MSU Extension.

The predicted apple harvest dates are now available at all locations on the Michigan State University Enviro-weather website. This spring was colder than average, which delayed the development of spring foliage. Then, warmer weather arrived and bloom developed seven days behind normal in the south to two days behind normal in the north part of Michigan. Record hot temperatures followed, thus advancing harvest dates to predict near normal dates for 2018 for the state. In general, 2018 predicted harvest dates are roughly normal in the south and a few days early in the north. Bloom dates this spring were late across the state.

As always, the weather seems to be unusual each year and 2018 was no different. It began with what appeared to be another very late spring. Most areas bloomed late except northern areas of the state. During April, very cold weather moved in several times leaving low areas and sensitive varieties with minor frost damage. In general, apple blocks have a mix of cropload, some light areas but mostly moderate to heavy crop loads. Blocks with light crop loads will mature three or four days sooner than the predicted harvest dates. Heavy crop loads will mature seven days later than the predicted dates. If hot, stressful weather occurs in August or September, apple maturity will be advanced.

The 2018 predicted harvest dates are listed in Table 1. We are a few days behind last year. Table 2 lists this year’s predictions compared to normal and last year.

The normal harvest dates for other varieties are listed in Table 3 for the Grand Rapids, Michigan, area. This year's 2018 predicted dates for other non-modeled varieties are a rough estimate based on the McIntosh, Jonathan and Red Delicious predicted dates. Other areas of the state should adjust non-predicted varieties based on their own history. ReTain application should be applied 30 days before harvest. Harvista can be applied three to seven days before harvest. Use Table 3 to time ReTain applications and adjust for varieties and locations.

Table 1. 2018 predicted peak harvest dates.

Full bloom date 2018

Predicted harvest date 2018

Station

McIntosh

Jons

Reds

McIntosh

Jons

Reds

Observer

SWMREC

May 11

May13

May 14

Sept. 8

Sept. 24

Oct. 1

Bill Shane

Deerfield

May 8

May 9

May 10

Sept. 5

Sept. 22

Sept. 29

Bob Tritten

Romeo

May 13

May 14

May 15

Sep. 10

Sept. 25

Sept. 30

Bob Tritten

Peach Ridge

May 16

May 17

May 17

Sept. 14

Sept. 26

Oct. 2

Amy Irish-Brown

Hart

May 21

May 22

May 23

Sept. 19

Sept. 30

Oct. 7

Amy Irish-Brown

NWMHRS

May 22

May 23

May 23

Sept. 20

ct. 2

Oct. 8

Nikki Rothwell

 

Table 2. 2018 predicted peak harvest dates compared to normal and last year.

Days ahead of normal

Days ahead of last year

Station

McIntosh

Jons

Reds

McIntosh

Jons

Reds

SWMREC

-1

-3

-3

-11

-9

-9

Deerfield

3

-1

3

-7

-4

-4

Romeo

3

0

3

-8

0

1

Peach Ridge

1

0

3

-9

1

2

Hart

-1

3

7

-6

0

-1

NWMHRS

2

4

9

-1

6

6

 


Table 3. Normal and 2018 peak harvest dates for varieties for the Grand Rapids area.

Variety

Normal date

2018 predicted date

Paulared

Aug. 24

Aug. 24

Gingergold

Aug. 26

Aug. 26

Gala

Sept. 10

Sept. 10

McIntosh

Sept. 15

Sept. 14

Honeycrisp

Sept. 18

Sept. 18

Empire

Sept. 24

Sept. 24

Jonathan

Sept. 26

Sept. 26

Jonagold

Sept. 26

Sept. 26

Golden Delicious

Oct. 2

Sept. 28

Red Delicious

Oct. 5

Oct. 2

Idared

Oct. 10

Oct. 9

Rome

Oct. 15

Oct. 14

Fuji

Oct. 25

Oct. 25

Braeburn

Oct. 25

Oct. 25

Goldrush

Nov. 1

Nov. 1

Did you find this article useful?