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Cultivation of Cannabis fiber varieties in central Finland
J.C. Callaway1 and A.M. Hemmilä2
1Department of Pharmaceutical Chemistry,
University of Kuopio
POB 1627, FIN-70211 Kuopio, Finland
2Metsätie 8, FIN-41500 Hankasalmi as, Finland
Introduction
The cultivation of Cannabis has a very long
tradition in Finnish agriculture. The earliest evidence of Cannabis use and
cultivation in Finland has been radiocarbon dated to 3,000 and 5,000 years ago,
respectively, a time which corresponds with the Finnish Stone Age (Laitinen 1995, Vuorela
1995). These findings suggest that early-blooming varieties of Cannabis were
once native to this region, and that this plant had agricultural value.
Many Finns over 60 years of age remember the cultivation of this
durable fiber plant, and especially its use in the fabrication of rope and sacks for
agricultural products. However, Cannabis has not been extensively cultivated
in Finland since the 1960s.
The typical Finnish farm is family owned, and often exists as a
relatively small-scale operation. Increasing industrialization since the early
1940s, in combination with more recent European Union (EU) agricultural restrictions, has
left the Finnish farmer in need of valuable cash crops to maintain what is left of the
family farm. Until recently, forests were often sold to offset agricultural losses,
however, this strategy is now being recognized as only a short-term solution to a much
larger problem. Since the long Summer days of high-latitude regions promote rapid
asexual growth in Cannabis, we saw the reintroduction of fiber hemp as a
potentially significant contribution to the cultural and agricultural life of the Nordic
countryside.
In collaboration with the Culture Secretary of Hankasalmi, Finland, we
began the Hankasalmi Hemp Project in the Autumn of 1994, with the intention of
demonstrating fiber hemp as a non-food agriculture product during the Summer of 1995.
We planned to present a small scale model for the cultivation of hemp, so that
almost any motivated individual could manufacture limited runs of specialty hemp paper,
yarn and fabrics during the long winter months as potential sources of additional income
and creative expression. Our primary goal is to return some amount of autonomy to
our agricultural community in the coming years. The following is an account of our
experience, which may be of use to others who plan to reintroduce Cannabis within
their local cultural context.
Trial Preparations
The seed of two French varieties of fiber hemp
(Futura-77 and Fedora-19) were delivered to the Hankasalmi Culture Secretary's office by
surface post, eight weeks before planting. We encountered no problems with their
importation. The local sheriff was informed of the planting six weeks after the
seeds arrived. The two varieties were mixed and planted in several plots throughout
central Finland during the first two weeks in June, at densities ranging from 50-100
seeds/m2, and harvested between mid-August and early October (Table 1).
Table 1. Events, days and corresponding dates for the development of fiber hemp in central Finland during 1995. | ||||||||
Event | Day | Date | Height (cm) |
|||||
Local sheriff informed Planting Police collect samples Police collect samples Early harvest of 0.5 Ha plot Frost -2 °C Frost -6 °C Police collect samples Final harvest |
- 0 21 54 64 94 96 107 123 |
April 24 June 13 July 4 August 6 August 16 September 15 September 17 September 28 October 14 |
- 0 5 140 190 280 285 330 375 |
Local and regional reporters were invited to witness the planting of the educational plot in the middle of a small village of about 3,000 inhabitants, and informed of our purpose. We also carefully explained the differences between hemp and marijuana, in an attempt to circumvent potential misunderstandings of this controversial plant. Levels of THC were monitored throughout the summer (Table 2) by gas chromatography with mass spectrometric detection (GC-MS), using an undisclosed method, by the Central Crime Laboratory in Helsinki, Finland.
Table 2. Results from forensic testing of Futura-77 and Fedora-19 (courtesy of the Central Crime Laboratory in Helsinki.) | ||||
Day | Date | %THC | ||
0 21 54 97 |
June 13 July 4 August 6 September 28 |
- 0.04 0.08 0.16 |
Observations
Weed suppression by Cannabis was effective
against common weeds, since none of them grew faster than hemp. The maximum growth
rate was recorded to be 3.8 cm/day during July 7-29, days 24-46 (Figure 1). Day
lengths during this time of rapid growth ranged from 20-18 hours, respectively. By
early August (day 54), tetrahydrocannabinol (THC) had increased to 0.08%, from the
previous 0.04% level at day 21 (Table 2).
Figure 1. Fiber hemp growth rate (1995) in central Finland at 62.2° N. latitude.
Soon after a dubious newspaper article was published
on this last fact, we began to witness crop predation by local misinformed youth, which
technically is a crime in Finland. As the situation continued to deteriorate, a
decision was quickly made by Project members to have an 'early harvest of the
educational plot on August 16 (day 64), to preserve the high community spirit which had
already formed around the Hankasalmi Hemp Project. Fortunately, several smaller
plots of these and other varieties of Cannabis were grown simultaneously in more
remote areas without informing the press, and local authorities allowed this to continue
as long as it did not become a problem.
Surprisingly, the appearance of the remaining crops were not
significantly affected by a series of night frosts between September 15-28 (days 94-96).
The larger leaves typically regained their form after wilting, over the course of
the following day, as temperatures increased above freezing. At no time were male or
female inflorescences observed on any plants. Long photoperiod maintenance of this
vegetative state probably contributed to the crops sustained growth until harvest
(Figure 1). Less than 1% of the total plant population succumbed to mold. Some
plants reached an overall height of 400 cm, and some had a base circumference of 5.5 cm by
the October 14 harvest (day 123).
Community Involvement
After the Hankasalmi educational field was
harvested, about 300 kg of plant material was immediately taken to a local lake for
retting. The remaining material was plowed into the field rather than burned.
Fiber from the dried, retted stalks were hand-collected by a children's art class and used
for the production of hand-made paper. Plants from other plots were cut in October
and also retted in water. With the more mature plants, retting was accomplished in
about 10 days, and the moist bast fibers were easily removed from the stalks by
hand. Further soaking under a variety of conditions, or dried directly, resulted in
several distinct collections of dry fiber and pulp masses.
Most local elected officials in Hankasalmi appreciated the positive
benefits of free popular attention for the community. Over 30 articles have already
been published in Finnish newspapers and agricultural magazines on various aspects of the
Project. One member (AMH) even had a spot on the national news (August 16, the
educational field being harvested just after it was used as a backdrop for the interview).
The Project officially concluded on September 9, 1995 with a day-long
informational seminar, reviewing the events and presenting future possibilities
(Kolehmainen et al. 1995). The seminar featured a diverse group of 10
speakers, including the local farmers, green activists, a historian, elected officials
from the local government, researchers, paper artists and representatives from the
International Hemp Association and the Finnish Forest and Agricultural Ministry.
Over 50 invited participants attended the seminar, which was also covered by local,
regional and national media. A wide variety of literature was on display, in
addition to many hemp-related products. We borrowed items from a local farm that
were last used for the production of hemp rope in 1964. In addition, a 50 year old
hemp rug was lent by the regional museum of handycrafts. Such a hemp product is
extremely rare in Finland, since fibers were aggressively recycled during shortages in the
1940s. The elderly woman who had made it was registered for the seminar, but
unfortunately passed away only a month before she could attend.
Conclusions
Although the two French hemp varieties were mixed,
no variation was readily apparent in any of the plots. Fortunately, for our
purposes, these strains of Cannabis were routinely bred for THC levels below 0.3%.
This was certainly a useful point in our discussions with officials.
Previously in Finland, forensic test results were simply reported as 'positive' or
'negative' for THC in criminal cases involving Cannabis, no prior consideration
having ever been made for actual amounts. It is interesting to note that levels of
THC in our plants grown at a latitude of 62° were approximately half the maximum level
claimed for the same varieties grown in France.
Although we applied for the EU hemp subsidy for the 0.5 ha plot, the
regional agricultural office in Jyväsklä announced that no subsidy would be granted.
Initially this agency had informed us that only a portion of the subsidy would be
allowed, due to the early harvest and consequent low yield. However, in December,
Project members were informed, without explanation, that no subsidy would be allowed.
Just recently we were informed by a local agricultural official thet the subsidy
was refused by the EU because "the plants were cut before they made seeds".
It has been decided that the 'non-drug' cultivation of hemp will be
allowed to continue in Finland. Although the cultivation of Cannabis has
never been prohibited in Finland, the law currently states that 'Cannabis sativa'
may not be cultivated for 'drug-purposes'. Therefore, it can be argued that someone
who uses any variety of Cannabis for drug purposes would be technically in
violation of the law, no matter how low the concentrations of THC may be. On the
other hand, even high THC varieties can be grown, in theory, as long as the intent is not
for 'drug-purposes'. The issue of medical marijuana has not yet been seriously
considered in Finland.
Both law enforcement officials and members of the Hankasalmi Hemp
Project underestimated the amount of positive public support and interest in the
reintroduction of Cannabis. In our experience, we found it extremely useful
to inform public officials and other individuals of our work, and to form cooperative
alliances with a wide variety of individuals and agencies. In particular, similar
startup projects should certainly have open dialogue with local elected officials, law
enforcement agencies, farmers, ecological activists, people from the arts and crafts,
teachers, health care professionals and members of the business community. Another
important factor to consider is how the event will be covered by the news media, and a
special effort must be made to provide reporters with accurate verbal and printed
information. Finally, at least for the foreseeable future, one should expect a
certain amount of political fall-out from the past 30 years of political propaganda
directed against Cannabis.
On the bright side, our greater rewards were an overall positive
national awareness of the plant in Finland and the continuing possibility of
re-introducing Cannabis into modern Finnish culture.
Acknowledgments
We gratefully acknowledge the technical support of
David Pate and thank the International Hemp Association for supplying our hemp seed.
Special thanks are due to Ulla Kolehmainen, the third member of the Hankasalmi Hemp
Project and Culture Secretary of Hankasalmi, who made the 0.5 hectare educational plot in
Hankasalmi available for this project. We would also like to thank DC from the Ohio
Hempery, Inc. and John Roulac from Hemptech.
References