Yes, you can grow cannabis on your windowsill and many growers do so routinely. You may not be able to grow quite the same heavy yielding monsters that can be grown professionally indoors (or outdoors in full sun). But with the right type of cannabis seeds (autoflower seeds are especially recommended) you can easily, and quickly, produce good quality harvests if you are prepared to tolerate a few compromises.
Growing cannabis on a windowsill
The pros and cons of growing cannabis on a windowsill
There are pros and cons to growing cannabis on a windowsill. If you live in a legal grow environment, you may not be too worried about passers-by seeing your plants. The main pros and cons for windowsill weed growing are below.
How to successfully grow weed on windowsills
Although cannabis plants can bloom with as little as 1-2 hours of direct light per day the yields will be puny compared to plants that can spend 10-12 hours each day blooming under direct sunlight (or powerful LEDs). When growing weed on windowsills in the northern hemisphere it helps to have a south-facing window (those growing in the southern hemisphere should opt for a north facing window).
Best cannabis seeds to grow on a windowsill
Growing autoflower seeds on a windowsill in small containers around 2-3 litres in size may only produce yields of ~10-20 grams per plant with heights ranging from 15-30cm tall in general. Not the same results that you might expect in a traditional indoor tent with powerful LED grow lights. But for many, windowsill cannabis growing allows the grower to harvest several plants throughout the year producing good quality buds with no significant costs other than a few autoflower seeds.
Auto Duck
Your only choice if you want naturally stealthy self-camouflaging autoflower plants.
Auto Duck has unique natural leaf camouflage. Without the traditional iconic marijuana leaf shape you can walk straight past Auto Duck without realising it is cannabis! The low-aroma characteristics work in favour of the windowsill weed growers. Expect an easy grow and a harvest in around 10-11 weeks.
Auto Blueberry
Classy dark forest fruit flavours and an instant anti-anxiety effect.
A naturally squat indica-dominant autoflower strain, she is well suited to windowsill weed growing. Auto Blueberry is one of two ultra-fast autoflower seeds (the other is Auto Blackberry Kush). Indoors some phenotypes may be ready in as little as 8-9 weeks after germination. The buds have a sweet blueberry muffin flavour and an effect which melts stress instantly.
Auto Blackberry Kush
Sweet potent buds and a fast growth cycle.
Like Auto Blueberry, Auto Blackberry Kush is a notably fast growing strain. Some plants may be ready to harvest in little over two months. The buds are often dark with rich deep cherry colours and a sweet fruity taste. Potency is very high too, not only can you expect blue/purple hues in your buds, but you can expect a deeply relaxing effect that soothes body and soul.
Growing cannabis from seed to harvest on a windowsill
The combined perils of publicly visible plants and an inevitable indoor cannabis aroma deters many from windowsill cannabis growing. But some growers don’t mind these drawbacks and for them, a windowsill is an ideal opportunity to produce a few more-or-less free jars of buds each year. Maybe more if you can get away with a small overhead supplemental light to boost yields.
You won’t need a grow tent and, other than some soil, containers, nutrients & autoflower seeds, you won’t need to spend any serious cash. If you can cope with the cons of cannabis windowsill growing, you can look forward to some low-cost easy stash!
