By Max Sargent


You don’t need to wait an age for a smokeable stash when growing weed outdoors. Rainy autumn and increasingly cold nights can damage your plants just in their crucial moment. Below, we’re going to introduce you to the best early-finishing outdoor strainsso you can make quick work of cultivating in the elements. As fast-flowering strains, the likes of Royal Cheese, Speedy Chile, Honey Cream, and Candy Kush are some of the best around for this purpose. However, the cultivars below stand shoulder-to-shoulder with these legends when it comes to brevity and overall quality.

Continue reading to discover cultivation tips on these speedy varieties. You’ll also learn about their genetic background, flavour profile, THC content, and effects!

Grape Ape

If you plan on growing Grape Ape outdoors, keep in mind that cannabis doesn’t like frost. Aim to sow seeds around two weeks before your last frost date, and nurture your seedlings indoors until they develop a few sets of true leaves. Transplant them into a greenhouse or under row covers to protect against any late frosts at the start of the season.

Grape Ape will put on most of her size during the vegetative phase. Grown in an 11L pot, she will grow at a maximum of 190cm. Apply light defoliation around one week before your plants enter the flowering stage to thin out her dense indica canopy and allow for superior light penetration and aeration. As one of the best early-finishing outdoor strains, Grape Ape flies through bloom in just 7–9 weeks. Flush plants for 2–3 weeks before harvest to enhance their flavour. Prepare to pull in up to 600g/plant around Late September.

Grape Ape descends from parent strains Afghani, Mendocino Purps, and Skunk #1. This indica-heavy hybrid serves up a physically relaxing and tranquil high fuelled by a THC content of 20%. Flavours of blueberry and skunk accompany every hit.

Grape Ape
23_genetic background_1 Afghani x Mendocino Purps x Skunk 1
33_Yield indoors_1 450 - 500 gr/m2
31_plant height outdoor_1 60 - 100 cm
25_flowering time_1 7 - 9 weeks
29_THC_1 THC: 20%
28_Type Blend_1 Sativa 10% Indica 90%
34_yield outdoor_1 500 - 600 gr/plant
32_plant height outdoors_1 160 - 190 cm
27_harvest period_1 Late September
22_Effect_1 Calming, Physically Relaxing, Sleepy

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Sweet ZZ

Germinate your Sweet ZZ seeds indoors to enhance germination rates. Once the last frost has passed and your plants have reached a height of around 10cm, transplant the seedlings into larger containers or directly into the ground. Aim to position your Sweet ZZ plants in the sunniest spot in your garden. Before the end of the vegetative phase, your plants will reach up to around 140cm, if you leave them untrained.

Stay on top of defoliation throughout the rest of veg, as Sweet ZZ’s small indica canopy can quickly become very dense. As the days start to become shorter in mid-July, Sweet ZZ will start flowering. Make an effort to trim away any yellowing leaves during this time to divert resources towards the buds. Prepare to harvest up to 550g/plant around 7–9 weeks after bloom begins, around Late September.

As the offspring of Grape Ape and Grapefruit, Sweet ZZ possesses an extremely sweet and fruity terpene profile. With a THC content of 22%, you can expect a stoning and relaxing high from this indica-dominant hybrid.

Sweet ZZ stages

Sweet ZZ
23_genetic background_1 Grape Ape x Grapefruit
33_Yield indoors_1 550 - 600 gr/m2
31_plant height outdoor_1 80 - 140 cm
25_flowering time_1 7 - 9 weeks
29_THC_1 THC: 22%
28_Type Blend_1 Sativa 20% Indica 80%
34_yield outdoor_1 500 - 550 gr/plant
32_plant height outdoors_1 160 - 200 cm
27_harvest period_1 Late September
22_Effect_1 Calming, Stoned

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Punch Pie

Use a heat mat and seed tray to quickly germinate your Punch Pie seeds indoors. Keep them under strong LED lights until they develop their first set of true leaves. Then, transplant them into 10cm pots filled with soil and a pinch of mycorrhizal fungi, and keep them well-lit until they reach a height of around 10cm. Once you’re sure the last frosts have passed, transplant your vegging plants out in the sunniest area of your garden. Punch Pie resists mould well, making it possible to leave her untrained; she’ll develop a large central cola and reach a height of 150cm.

Defoliate heavily during the first week of the flowering stage to increase light exposure to lower buds. Consider staking the branches to protect them from late summer storms. Start flushing your plants during week six of flowering and prepare to harvest up to 750g/plant during late September.

Punch Pie’s heritage makes her one of the best feminized seeds for outdoor growing. This collaboration between Tyson 2.0 and RQS descends from hardy parent strains Purple Punch and Purple Kush. She delivers a THC content of 22%, flavours of blueberry and candy, and a euphoric and stoning high.

Punch Pie
23_genetic background_1 Purple Punch x Purple Kush
33_Yield indoors_1 550 - 600 gr/m2
31_plant height outdoor_1 80 - 110 cm
25_flowering time_1 7 - 9 weeks
29_THC_1 THC: 22%
28_Type Blend_1 Sativa 10% Indica 90%
34_yield outdoor_1 650 - 750 gr/plant
32_plant height outdoors_1 120 - 150 cm
27_harvest period_1 Late September
22_Effect_1 Calming, Euphoric, Physically Relaxing, Sleepy

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Gelato 44

You can germinate Gelato 44 seeds directly in their final pots, as soon as the last frost has passed. Consider using a bell cloche to speed up germination time. Remove the cloche as soon as shoots appear during the day to prevent damping off, but replace it at night as a buffer against possible night-time frosts. Apply organic seaweed, fish emulsion, and compost tea foliar sprays weekly to spur leafy growth and protect against leaf pathogens. Gelato 44 will peak at 180cm if grown in a large pot. You can limit her size to 140cm by using a smaller container or by applying LST during early veg.

Switch to a feed higher in potassium and phosphorus as her preflowers start to develop. If you’re growing in a greenhouse, make sure to provide good airflow during bloom to reduce the risk of mould. Prepare to harvest up to 600g/plant at the end of her 8–9-week flowering phase.

As a phenotype of the original Gelato, this Tyson 2.0 strain descends from Sunset Sherbet and Thin Mint Girl Scout Cookies. Reserve these buds for the evening, when their THC content of 22% and minty and sweet terpenes will whisk you away into a state of tranquillity.

Gelato 44
23_genetic background_1 Sunset Sherbet X Thin Mint Girl Scout Cookies
33_Yield indoors_1 400 - 450 gr/m2
31_plant height outdoor_1 80 - 120 cm
25_flowering time_1 8 - 9 weeks
29_THC_1 THC: 22%
28_Type Blend_1 Sativa 25% Indica 75%
34_yield outdoor_1 550 - 600 gr/plant
32_plant height outdoors_1 140 - 180 cm
27_harvest period_1 Late September
22_Effect_1 Creative, Euphoric, Long Lasting , Physically Relaxing

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Green Crack Punch

Are you ready for our final early-finishing outdoor strain? This cultivar flies through bloom, but success starts at germination. For the best results, Green Crack Punch benefits from indoor germination where consistent temperatures spur quick seedling development. Transplant outdoors when your specimen has two sets of true leaves and a thickened sturdy stem.

During veg, this strain requires less defoliation and training than those mentioned above; longer internodes and thinner leaflets make for natural light penetration. Without training, she’ll peak at 220cm, making her one of the largest varieties to flower this fast.

Consider staking her longer branches during flowering to prevent damage from storms and heavy winds. It takes only 8–9 weeks for her buds to develop, swell, and ripen. Feed her well, and you’ll receive a rewarding 600g/plant by Late September.

Green Crack Punch inherited her productivity and blissful effects from parent strains Green Crack and Purple Punch. A THC content of 18% makes her a mellow choice, and her moreish terpene profile emits aromas of citrus and sweet fruits.

Green crack punch stages

Green Crack Punch
23_genetic background_1 Green Crack x Purple Punch
33_Yield indoors_1 450 - 500 gr/m2
31_plant height outdoor_1 90 - 160 cm
25_flowering time_1 8 - 9 weeks
29_THC_1 THC: 18%
28_Type Blend_1 Sativa 60% Indica 40%
34_yield outdoor_1 550 - 600 gr/plant
32_plant height outdoors_1 180 - 220 cm
27_harvest period_1 Late September
22_Effect_1 Calming, Euphoric

Buy Green Crack Punch

The Best Strains for Quicker Outdoor Harvests

The strains listed above are perfect for outdoor growers looking for quick results. Whether you’re up against a short growing season, need to prioritise stealth, or simply don’t want to wait as long for a smokable stash, these genetics fit the bill. Consider which flavours and effects match your preferences, order some seeds, and prepare for the growing season ahead!

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