Excerpt from Jorge’s Upcoming Book:
The Cannabis Encyclopedia: Indoor, Outdoor and Greenhouse Cultivation, Concentrates and Cooking Medical Marijuana
Chapter 4: Cannabis Life Cycle
Where and When to Plant?
This section outlines three different gardens in three different locations: indoor, greenhouse, and outdoor. The examples show different planting and harvest scenarios that use the natural advantages provided by each garden and the varieties grown. For more complete information about each type of garden, see chapters on Grow Rooms, Case Studies, Outdoors, and Medical Cannabis Varieties.
Maintain mother plants and clones with 18–24 hours of light daily. Induce vegetative plants to flower by providing 12 hours of uninterrupted darkness and 12 hours of light every 24 hours. Once the dark/light schedule has been set to 12 hours dark and 12 hours light, most varieties of cannabis will flower and can be harvested in 60–90 days.
Indoor Spring Crop – 90 days
This indoor garden is growing under T5 fluorescent lights. The T5s are able to supply plenty of light for vegetative growth. The plants are in individual containers and are easy to move in the garden.
01 January – Move well-rooted 12–18-inch-tall (30–45 cm) female clones into room under 18–24 hours of light.
21 January – Transplant clones into 3-gallon (11 L) containers.
30 January – Induce flowering with 12-hour days and nights.
07 February – Take cuttings and start the next crop of clones. Give clones 18–24 hours of light.
30 March – Harvest first crop.
Indoor Summer Crop – 90 days
The garden on the right is about one week ahead of the garden on the left and will be harvested a week earlier.
01 April – Move well-rooted female clones into room under 18–24 hours of light.
21 April – Transplant clones into 3-gallon (11 L) containers.
30 April – Induce flowering with 12-hour days and nights.
07 May – Take cuttings and start the next crop of clones. Give clones 18–24 hours of light.
30 June – Harvest first crop.
Indoor Autumn Crop – 90 days
The plants on the left will be ready to harvest in about one week. The plants on the right are about two weeks into flowering and will be harvested in about six weeks.
01 July – Move well-rooted female clones into room under 18–24 hours of light.
21 July – Transplant clones into 3-gallon (11 L) containers.
30 July – Induce flowering with 12-hour days and nights.
07 August – Take cuttings and start the next crop of clones. Give clones 18–24 hours of light.
30 September – Harvest first crop.
Greenhouse crops can be harvested two or more times a year, but most often greenhouses are planted in the spring and yield a single harvest in the fall. In cold climates, greenhouses must be heated. All greenhouses must be vented or cooled in warm weather. The basic harvest scenario below shows how to harvest three greenhouse crops every year.
Greenhouse Spring Crop – 90 days
This Mexican greenhouse needs shade cloth and supplemental lighting at night to keep plants in the flowering growth stage. The days and nights are between 11and 13 hours long all year round. This is the perfect photoperiod for flowering in cannabis.
01 March – Move bushy well-rooted 1–2-foot-tall (30–60 cm) clones and seedlings into greenhouse.
01 March – Long 12-hour nights and short 12-hour days in spring signal cannabis to flower.
15 March – Remove any male plants. To distinguish plants, look for male pre-flowers.
15 March – Transplant clones and female seedlings into large containers.
15 April – Darken greenhouse after 12 hours of daylight, until harvest.
30 May – Harvest: The less intense sunlight will make for smaller buds than harvests later in the season.
Greenhouse Summer Crop – 90 days
Black plastic is alongside this light deprivation greenhouse. Every day the black plastic is pulled over the greenhouse to “black it out” and create a total of 12 hours darkness, which induces flowering in indica and sativa varieties of cannabis.
01 June – Move bushy, well-rooted 1–2-foot-tall (30–60 cm) clones and seedlings into greenhouse.
15 June – Remove male plants; male pre-flowers distinguish male plants from females.
15 June – Transplant clones and seedlings into larger containers.
01 July – Induce flowering by “blacking out” (covering) greenhouse after 12 hours of light.
15 July –Verify the gender of all plants. Remove any remaining males.
01 August – Maintain flowering by covering greenhouse after 12 hours of light until harvest.
30 August – Harvest a heavy crop of top quality medicinal cannabis flower buds that have received maximum levels of sunlight.
Greenhouse Autumn Crop – 75 days
The small greenhouse protects flowering cannabis from regular rains and bad weather. The greenhouse also keeps plants a little warmer at night. More regular irrigation is necessary when growing large plants in small containers.
01 September – Move bushy, well-rooted 1–2-foot-tall (30–60 cm) clones and seedlings into greenhouse.
15 September – Long nights and short days of autumn signal cannabis to start flowering.
15 October – Medical cannabis flowers develop but low light levels limit growth.
15 November – Harvest smaller buds that have received less intense fall sunlight.
Typically, outdoor gardens are planted in the spring and harvested in autumn. Applying information from this chapter, outdoor gardens can be harvested two or three times a year in moderate to temperate climates. Transplanting clones and seedlings and harvesting a single crop is all that is possible in cold climates with a growing season of 90 days. Extra care must also be taken to protect seedlings and clones from harsh weather.
Mild Climate Spring Crop – 90 days.
01 March – Move bushy, well-rooted 1–2-foot tall clones and seedlings into full-sun heated greenhouse.
Plant a spring crop in warm climates. Diminished sunlight intensity grows smaller buds, about half to three quarters as big as others. If plants get cold at night, growth slows.
01 March – Long nights will induce cannabis to flower.
15 March – Remove male plants; male flowers distinguish male plants.
15 March – Transplant clones and female seedlings into large containers.
15 March – Move outdoors in mild climates – may need to cover on cool nights.
15 April – Darken plants after 12 hours of daylight if flowering slows.
30 May – Harvest smaller buds that received less intense spring sunlight.
Mid-summer Crop – 70–75 days
This little autoflowering feminized seedling is an example of how a germinated seed can grow into a mature plant ready for harvest in just 70 days and receive 18 hours of daily light!
01 May – Start ruderalis-dominant (super autoflowering feminized) variety indoors.
15 May – Transplant autoflowering feminized variety to 3-gallon (11.3 L) containers.
21 May – Transplant strong healthy plants to outdoor garden.
01 June – Female flowers are visible.
15 July – Harvest 3–3.5 ounces (85–100 gm) of dried flower buds per plant.
Pure Indica/Sativa and Indica/Sativa Crosses
Spring-planted Autumn Crop – 210 days
A complete 7-month-long season will yield very big plants when grown properly. These 10-pound (4.5 kg) plants received full sun all day long and grew in outstanding organic soil.
01 March – Plant clones and seedlings indoors.
01 May – Move bushy 1–2-foot-tall clones and seedlings outdoors in temperate climates.
01 May – Pre-flowers appear; remove male plants.
01 June – Move bushy 1–2-foot-tall clones and seedlings outdoors in all climates.
01 August – Flowers start to form; remove any “surprise” male plants.
30 September – Harvest a large crop from big plants.
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