(b) Foundation stock.

1. (1) Foundation plants may be maintained indefinitely if grown in an insect-proof facility (greenhouse), in sanitized substrate, and indexed every three (3) years by the United States Department of Agriculture or other personnel approved by the board.

2. (2) Growers may use micropropagation techniques to multiply foundation plants prior to planting in a foundation greenhouse provided:

   1. (A) The micropropagated plants are isolated from other nonindexed blackberry plants; and
   2. (B) The micropropagation facilities are approved by the board.
3. (3) In greenhouse or screenhouse, foundation plants shall be produced in separate sanitized containers with labeling of cultivar name and lot number (if applicable).

4. (4)

   1. (A) Noncertified Rubus species must not exist within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the greenhouse.
   2. (B) Weeds that host diseases of major concern must be controlled within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the greenhouse.
   3. (C) Insects that vector diseases of major concern should be controlled in isolation areas.
5. (5) Noncertified Rubus species must not exist within the greenhouse or screenhouse.
6. (6) Blossoms shall be removed before the blossoms open.

(c) Registered stock.

1. (1) Registered plants may be maintained indefinitely if grown in an insect-proof facility (greenhouse), in sanitized substrate, and indexed every three (3) years.
2. (2) In greenhouse or screenhouse, registered plants shall be produced in separate sanitized containers with labeling of cultivar name and lot number (if applicable).

3. (3)

   1. (A) Noncertified Rubus species must not exist within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the greenhouse.
   2. (B) Weeds that host diseases of major concern must be controlled within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the greenhouse.
   3. (C) Insects that vector diseases of major concern should be controlled in an isolation area.
4. (4) Noncertified Rubus species must not exist within the greenhouse or screenhouse.

5. (5)

   1. (A) For field production, soil treatment is required with an approved method (ex. solid soil fumigation with methyl bromide and chloropicrin).
   2. (B) Weeds that host diseases of major concern will be controlled.
   3. (C) Insects that vector diseases of major concern should be controlled in an isolation area.

6. (6)

   1. (A) Noncertified Rubus species must not exist within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the field used to produce certified blackberry stock.
   2. (B) Each lot and/or different cultivars are labeled and separated by a:

(i) Distance of four and one-fourth meters (4 1/4 m) or fourteen feet (14’); or

1. (ii) A physical barrier that prevents intermingling of roots.
2. (7) Field-produced registered stock shall not be harvested beyond one (1) year.

3. (8) Blossoms shall be removed before the blossoms open.

   1. (d) Certified stock.
4. (1) Certified plants may be maintained indefinitely if grown in an insect-proof facility (greenhouse), in sanitized substrate, and indexed every three (3) years.
5. (2) In greenhouse or screenhouse, certified plants shall be produced in separate sanitized containers with labeling of cultivar name and lot number (if applicable).

6. (3)

   1. (A) Noncertified Rubus species must not exist within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the greenhouse.
   2. (B) Weeds that host diseases of major concern must be controlled within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the greenhouse.
   3. (C) Insects that vector diseases of major concern should be controlled in an isolation area.
7. (4) Noncertified Rubus species must not exist within the greenhouse or screenhouse.

8. (5)

   1. (A) For field production, soil treatment is required with an approved method (ex. solid soil fumigation with methyl bromide+ chloropicrin).
   2. (B) Weeds that host diseases of major concern will be controlled.
   3. (C) Insects that vector diseases of major concern should be controlled in an isolation area.

9. (6)

   1. (A) Noncertified Rubus species must not exist within one hundred fifty-two meters (152 m) or five hundred feet (500’) of the perimeter of the field used to produce certified blackberry stock.

   2. (B) Each lot and/or different cultivars are labeled and separated by a:

      1. (i) Distance of four and one-fourth meters (4 1/4 m) or fourteen feet (14’); or
      2. (ii) Physical barrier that prevents intermingling of roots.
10. (7) Field-produced certified stock shall not be harvested beyond one (1) year.
11. (8) Blossoms shall be removed before blossoms open.