How to force flowering

Should the drop between 18 hours of light and 12 hours of light be gradual or immediate?
JM,
Surrey, England

Marijuana’s growth stage is determined by the number of hours of uninterrupted darkness it receives rather than its chronological age. When it receives 18 hours of light or more daily it grows vegetatively, producing more branches and leaves. When subjected to an uninterrupted dark period of 12 hours daily, its growth switches from vegetative to reproductive and it begins to flower. There is no reason to make this switch gradually. The plants respond rather mechanistically to the light regimen.

Outdoor cultivated marijuana flowering is also determined by the number of hours of uninterrupted darkness it receives. During the summer, when the day length is longer nearer the poles than the equator, a particular marijuana variety flowers much earlier in Florida than in Vancouver. It begins to flower when a critical dark period is reached. For most varieties this seems to be between 8 and 12 hours of uninterrupted darkness daily.

You can find out a plant’s critical light level by observing plants outdoors to see when they start flowering. Check the length of the darkness period when you observe the first flowers. Indoors, you can start at 9 hours of darkness and increase the dark period by 15 minutes each week. Figure the critical period as 15 minutes shorter than the dark period length when you see the first flowers. Suppose a plant’s critical dark period is 10 hours. This means that it will flower under 14 hours of light per day. This is 2 hours longer than the 12 hour light period which is generally recommended. The two hours extra light each day is a 16 percent increase in light to the plant. This is critical because light = growth.

A shorter dark period may lengthen the flowering period a bit. To get the buds to ripen quickly, the dark period can be lengthened to 12 or even 14 hours.

Readers with grow questions (or answers) should send them to Ed at:
Ask Ed, PMB 147, 530 Divisadero St., San Francisco, California 94117, USA
You can also email Ed at [email protected], and send queries via his website at www.quicktrading.com.
All featured questions will be rewarded with a copy of Marijuana Question? Ask Ed. Sorry, Ed cannot send personal replies to your questions.

Comments

300 Comments

  1. Pingback: shemale porn

  2. Pingback: Jogos Kizi

  3. Pingback: best free porn

  4. Pingback: best porn site

  5. Pingback: will be the last of us for pc

  6. Pingback: best porn sites

  7. Pingback: truthaboutabs2.com

  8. Pingback: prima-equitation.com

  9. Pingback: nike athletic shoes

  10. Pingback: where to buy gynexol

  11. Pingback: btc

  12. Pingback: Personalized Video From Santa Claus

  13. Pingback: vakantiehuis winterberg

  14. Pingback: best porn

  15. Pingback: buy instagram porn

  16. Pingback: porno

  17. Pingback: spinzio

  18. Pingback: deeeep.io hacked

  19. Pingback: cheap iphone 6 case

  20. Pingback: porn sites

  21. Pingback: personal injury lawyer

  22. Pingback: anthony morrison

  23. Pingback: michael kors wallets

  24. Pingback: al

  25. Pingback: Mathematics

  26. Pingback: sell

  27. Pingback: domino ceme

  28. Pingback: mk bags

  29. Pingback: Camera & Photo

  30. Pingback: eico auto insurance quotes

  31. Pingback: slot machines

  32. Pingback: wholesale snapbacks

  33. Pingback: mk bags canada

  34. Pingback: hacklinks

  35. Pingback: momschips

  36. Pingback: buy viagra online

  37. Pingback: air conditioners 9.000 - 12.000 btu quick installation

  38. Pingback: pirater un compte facebook

  39. Pingback: programas de ventas gratis

  40. Pingback: Yöresel Antep Fıstık Ezmesi

  41. Pingback: porn world xxx sex polls

  42. Pingback: Hearing

  43. Pingback: boob enhancement cream

  44. Pingback: puta cataluña

  45. Pingback: pornmd

  46. Pingback: mspy

  47. Pingback: essay service

  48. Pingback: desi serial

  49. Pingback: Arabic songs

  50. Pingback: 3D Model Gor Motorcycle

  51. Pingback: online research paper writer

  52. Pingback: Computer disposal wokingham

  53. Pingback: Los Angeles Seo Services

  54. Pingback: pornwik.com

  55. Pingback: old computer equipment recycling

  56. Pingback: payday loans

  57. Pingback: http://secretgirlgames.com/profile/qhacamille3

  58. Pingback: 16-Function Clitoral And G-Spot Rabbit Vibrator

  59. Pingback: Polecam

  60. Pingback: duvporn

  61. Pingback: bowman

  62. Pingback: mobile phone accessories

  63. Pingback: Hakukoneoptimointi Espoo

  64. Pingback: فیلم رگ خواب

  65. Pingback: Google blackhat

  66. Pingback: avakin life hack code

  67. Pingback: smart glass

  68. Pingback: فیلم نهنگ عنبر

  69. Pingback: Baby car seat cover

  70. Pingback: فیلم رگ خواب

  71. Pingback: Baby breastfeeding cover

  72. Pingback: current bitcoin value

  73. Pingback: eyevage review

  74. Pingback: christmas 2017 coupon codes

  75. Pingback: menoquil

  76. Pingback: prostara review

  77. Pingback: Oddsmonkey

  78. Pingback: Oddsmonkey

  79. Pingback: Oddsmonkey

  80. Pingback: Oddsmonkey

  81. Pingback: Oddsmonkey

  82. Pingback: دانلود فیلم نهنگ عنبر 2 با لینک مستقیم

  83. Pingback: Oddsmonkey

  84. Pingback: time of birth astrology

  85. Pingback: Oddsmonkey

  86. Pingback: link

  87. Pingback: buy hacklinks

  88. Pingback: Bermain Judi dan Uang

  89. Pingback: Menari Diatas Lapangan Hijau

  90. Pingback: دانلود موزیک

  91. Pingback: نهنگ عنبر

  92. Pingback: my site check here

  93. Pingback: click now

  94. Pingback: porn movie

  95. Pingback: free android porn

  96. Pingback: Judi Online

  97. Pingback: Bola Online Terbaik

  98. Pingback: Locksmith

  99. Pingback: child abuse policy

  100. Pingback: Get More Information

  101. Pingback: Booster seat cover

  102. Pingback: real caller blackberry

  103. Pingback: Billiga Canada Goose

  104. Pingback: billboard

  105. Pingback: hot porn

  106. Pingback: stretchy car seat canopy

  107. Pingback: دانلود فیلم

  108. Pingback: دانلود شهرزاد فصل دوم

  109. Pingback: دانلود سریال شهرزاد

  110. Pingback: پنجره دوجداره

  111. Pingback: Get the facts

  112. Pingback: stamps cheap

  113. Pingback: پنجره دوجداره

  114. Pingback: make a pisces man happy

  115. Pingback: پنجره دوجداره

  116. Pingback: buy cheap hacklinks

  117. Pingback: payday loans

  118. Pingback: FINANCE TEST BANKs

  119. Pingback: colors for children to learn

  120. Pingback: Bandar Bola

  121. Pingback: Elvis Presley Wedding Singer

  122. Pingback: ship car overseas

  123. Pingback: دانلود فیلم نهنگ عنبر

  124. Pingback: cheap air jordans

  125. Pingback: buy hacklinks

  126. Pingback: pimple popper tool

  127. Pingback: used vape mods

  128. Pingback: Easiest Way To Make Money - $326 a Day Online Without a Website

  129. Pingback: Femdom bisexual strapon Part 2

  130. Pingback: Agen Bola

  131. Pingback: watch it movie streaming

  132. Pingback: Terrance

  133. Pingback: responsive real estate wordpress themes

  134. Pingback: پنجره دوجداره

  135. Pingback: garden bridges california

  136. Pingback: garden bridges california

  137. Pingback: پنجره دوجداره

  138. Pingback: upvc window

  139. Pingback: download movie

  140. Pingback: دانلود سریال

  141. Pingback: karajupvc

  142. Pingback: steel kitchen

  143. Pingback: kitchen tools

  144. Pingback: maintenance

  145. Pingback: 192.168.o.11 trocar senha do roteador

  146. Pingback: EVA TV

  147. Pingback: vlog editor

  148. Pingback: usi tech

  149. Pingback: http://lamoosh1.doodlekit.com/blog/entry/4195228/is-there-a-unique-computer-software-for-creating-iphone-applications

  150. Pingback: Nursery Rhymes

  151. Pingback: Coral

  152. Pingback: silor b

  153. Pingback: garden

  154. Pingback: Seo

  155. Pingback: دانلود

  156. Pingback: قیمت پنجره

  157. Pingback: karaj

  158. Pingback: پنجره دوجداره

  159. Pingback: aliexpress dropshipping websites

  160. Pingback: here are the findings

  161. Pingback: Seo Yakima

  162. Pingback: window

  163. Pingback: Ultrasonic Wind Sensor

  164. Pingback: دانلود

  165. Pingback: ed sheeran news

  166. Pingback: rain shower head

  167. Pingback: https://www.youtube.com/watch?v=Bld2NoB1hBI

  168. Pingback: Extra resources

  169. Pingback: Limos Bus Vancouver BC

  170. Pingback: Mitch McConnell

  171. Pingback: مشاوره کسب و کار اینترنتی

  172. Pingback: instagram turbanli porn

  173. Pingback: drugs

  174. Pingback: SEO Leeds

  175. Pingback: https://discussions.apple.com/people/jorgedavidson

  176. Pingback: فروش توری پنجره دوجداره

  177. Pingback: پنجره

  178. Pingback: پنجره دوجداره

  179. Pingback: پنجره دوجداره

  180. Pingback: پنجره

  181. Pingback: پنجره ضد سرقت

  182. Pingback: قیمت پنجره دوجداره

  183. Pingback: دانلود فیلم

  184. Pingback: upvc window

  185. Pingback: how to buy bitcoin

  186. Pingback: buy home

  187. Pingback: دانلود فیلم سریال ایرانی

  188. Pingback: buy home

  189. Pingback: دانلود فیلم

  190. Pingback: Limousine Vancouver BC

  191. Pingback: Move Out Cleaning harker heights TX

  192. Pingback: callaway drivers australia

  193. Pingback: mobile specs

  194. Pingback: دانلود فیلم

  195. Pingback: دانلود

  196. Pingback: آموزش ساخت پنجره دوجداره

  197. Pingback: فروش توری پنجره دوجداره

  198. Pingback: پنجره ضد سرقت ایرانی

  199. Pingback: قیمت پنجره دوجداره

  200. Pingback: game

  201. Pingback: engine light

  202. Pingback: http://urladda.com/5J4A

  203. Pingback: دانلود فیلم

  204. Pingback: دانلود قسمت دوم سریال عالیجناب

  205. Pingback: دانلود فیلم

  206. Pingback: Lavone

  207. Pingback: 16 دانلود سریال شهرزاد

  208. Pingback: Online

  209. Pingback: http://

  210. Pingback: دانلود شهرزاد سیزده 13

  211. Pingback: clash royale hack

  212. Pingback: دانلود شهرزاد قسمت 13

  213. Pingback: دانلود شهرزاد قسمت 15

  214. Pingback: پنجره

  215. Pingback: کول دانلول

  216. Pingback: rookie baseball card collection

  217. Pingback: nicocontrol pre�o

  218. Pingback: la soucre

  219. Pingback: m tech legend

  220. Pingback: coin-banks bitcoin

  221. Pingback: coin-banks trading

  222. Pingback: DraftKings

  223. Pingback: Porn

  224. Pingback: magazin pescuit

  225. Pingback: coin-banks review

  226. Pingback: bitcoin investment coin-banks

  227. Pingback: coin-banks cryptocurrency

  228. Pingback: Qiu Qiu Online

  229. Pingback: پنجره دو سه جداره

  230. Pingback: پنجره

  231. Pingback: jake burgess san diego ca

  232. Pingback: visit this link

  233. Pingback: دانلود قسمت هفتم شهرزاد دوم

  234. Pingback: video gaming

  235. Pingback: free zynga poker chips

  236. Pingback: hotel booking sites

  237. Pingback: دانلود قسمت پنجم شهرزاد دوم

  238. Pingback: casino games play for real money

  239. Pingback: دانلود قسمت ششم شهرزاد

  240. Pingback: پنجره

  241. Pingback: Acne Facial Treatments Miramar

  242. Pingback: Facial Spa Services Coconut Creek

  243. Pingback: Facial Spa Services Hollywood

  244. Pingback: شرکت تولیدی پنجره دوجداره ترک المانی ایرانی

  245. Pingback: ساخت پنجره دو سه جداره

  246. Pingback: قیمت پنجره

  247. Pingback: car transport

  248. Pingback: دانلود سریال عاشقانه

  249. Pingback: آموزش ساخت پنجره دوجداره

  250. Pingback: porno gratis

  251. Pingback: videos porno

  252. Pingback: videos porno

  253. Pingback: porno

  254. Pingback: porno gratis

  255. Pingback: porno

  256. Pingback: videos porno

  257. Pingback: porno gratis

  258. Pingback: porno

  259. Pingback: porno

  260. Pingback: No NEET required

  261. Pingback: videos porno

  262. Pingback: jerseys melbourne

  263. Pingback: how to bypass windows 7 password

  264. Pingback: دانلود قسمت یازدهم شهرزاد دوم

  265. Pingback: دانلود قسمت دوازدهم عاشقانه

  266. Pingback: دانلود قسمت پنجم شهرزاد دوم

  267. Pingback: Hunde tshirts

  268. Pingback: دانلود سریال عاشقانه

  269. Pingback: پنجره

  270. Pingback: casinos

  271. Pingback: Free Stuff Worldwide

  272. Pingback: April O'Neil

  273. Pingback: lesbian porn

  274. Pingback: Mia Malkova

  275. Pingback: Allie Haze

  276. Pingback: Isis Love

  277. Pingback: Michelle Martinez

  278. Pingback: دانلود قسمت سیزده عاشقانه

  279. Pingback: دانلود قسمت دهم فصل دوم شهرزاد

  280. Pingback: دانلود قسمت هفدهم عاشقانه

  281. Pingback: دانلود قسمت چهارده عاشقانه

  282. Pingback: دانلود قسمت دوازدهم عاشقانه

  283. Pingback: دانلود شهرزاد قسمت دوازدهم فصل دوم

  284. Pingback: دانلود شهرزاد قسمت هشتم فصل دوم

  285. Pingback: دانلود قسمت هشتم شهرزاد دوم

  286. Pingback: دوم 2 دوم 2 دوم 2 دوم 2 دوم 2 دوم 2 دوم 2 دوم 2 دوم 2 دوم 2 دوم 2 دوم 2aaadffdsvc

  287. Pingback: alcohol facts

  288. Pingback: دانلود رایگان قسمت 8 هشتم سریال شهرزاد فصل دوم 2

  289. Pingback: x78bn5t37bc45rtb3x45ctbwxds

  290. Pingback: Stephani Mitchel

  291. Pingback: Cannabis Vegetative Stage Length – Facts-About-Cannabis

  292. Pingback: anami sikin

  293. Pingback: resource

  294. Pingback: warehouse for rent Miami

  295. Pingback: best place to buy steroids on the internet

  296. Pingback: reserver hotel de luxe pas cher

  297. Pingback: orospunun dogurdugu

  298. Pingback: buy backlinks

  299. Pingback: sekiz izle

  300. Pingback: sekiz izle