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  • Up to 70% off

    Boxing Day Sale On Now!

    Up to 70% off

    Boxing Day Sale On Now!

    Lettuce - Cos Seeds

    Cos lettuce is super easy to grow hydroponically so chuck it in one of your units and watch it grow! These can often take a little while to germinate so be patient! No need to use all the seeds at once though as there are way too many for one round of growing. It may be a good idea to start growing a small amount in one grow pot, before waiting a few weeks to plant seeds in the other. This way you allow for some crop rotation so that you always have a crop available!

    Harvesting; Once your plants are about 10cm tall you can begin to harvest them! Pick the outer leaves continually or if you’re hungry you can pick the whole plant and plant some replacement seeds

    Cos lettuce is perfect for eating fresh in salads or if you’re feeling adventurous; try adding it to a stir fry for a lovely rich lettuce flavour!

    Specifications

    Scientific Name Lactuca sativa
    Quantity of seeds ~150
    Planting Depth 6 mm
    Plant height 30 cm
    Days to Maturity 80
    Lifespan Annual
    Tips Scatter seeds in the growing pot. Don't use all the seeds as there are way too many for one round of growing. It may be a good idea to start growing a small amount in one grow pot, before waiting a few weeks to plant seeds in the other. This way you allow for some crop rotation so that you always have a crop available.

    This super fresh crispy lettuce is perfect for indoor growth and can be used in an endless number of salads and sandwiches! Grow them hydroponically in your indoor grows kits to save time, water, and stress!

    Cos lettuce is super easy to grow hydroponically so chuck it in one of your units and watch it grow! These can often take a little while to germinate so be patient! No need to use all the seeds at once though as there are way too many for one round of growing. It may be a good idea to start growing a small amount in one grow pot, before waiting a few weeks to plant seeds in the other. This way you allow for some crop rotation so that you always have a crop available!

    Harvesting; Once your plants are about 10cm tall you can begin to harvest them! Pick the outer leaves continually or if you’re hungry you can pick the whole plant and plant some replacement seeds

    Cos lettuce is perfect for eating fresh in salads or if you’re feeling adventurous; try adding it to a stir fry for a lovely rich lettuce flavour!

    Specifications

    Scientific Name Lactuca sativa
    Quantity of seeds ~150
    Planting Depth 6 mm
    Plant height 30 cm
    Days to Maturity 80
    Lifespan Annual
    Tips Scatter seeds in the growing pot. Don't use all the seeds as there are way too many for one round of growing. It may be a good idea to start growing a small amount in one grow pot, before waiting a few weeks to plant seeds in the other. This way you allow for some crop rotation so that you always have a crop available.
    FAQ - Gathera

    ❓ Frequently Asked Questions

    Find answers to common questions about ordering with Gathera

    📦 Shipping & Delivery

    Where is my product shipped from?
    Orders for Australia, New Zealand, USA, Canada, and India are shipped from our warehouse in Sydney, Australia. UK and EU customers should shop directly from our dedicated store at www.gathera.co.uk, where orders ship from our UK warehouse in Bristol.
    How long is postage and what is the cost?
    Australia: Shipping is typically 2-6 business days. Orders over $140 AUD qualify for free domestic postage (may change during sale periods). Sydney Metro, Canberra, and Melbourne Metro areas often receive orders within 2–3 business days.

    International (Standard): New Zealand is 9–15 business days, and the USA is 10–20 business days. Shipping costs are calculated at checkout. For full details, see our Postage and Delivery page.
    What countries do you ship to?
    We ship to Australia, New Zealand, the USA, Canada, and India. Customers in the UK/EU must use our separate store at www.gathera.co.uk.
    How can I track my order?
    Once your order has shipped, you will receive an email containing your tracking number and a link to the carrier's website. Please allow 24 hours for the tracking information to update.

    🔄 Returns & Policy

    What is your returns policy?
    We offer a 30-day change of mind return policy. To be eligible, your item must be unused, in the same condition you received it, and in the original packaging. Returns must be requested within 30 days of receiving your item. You can read the full policy details on our dedicated page: See the full Refund Policy here.
    What if my product arrives damaged or defective?
    If your product arrives damaged or defective, please contact our customer support team immediately with your order number and photos of the issue. We will arrange a replacement or refund quickly.

    💡 Product Use & Care (Grow Lights)

    How do I use grow lights effectively?
    Distance & Time: For most houseplants, place the light 30-60cm (12-24 inches) away and run for a 12–16 hour photoperiod. Seedlings and herbs may require the light closer (15-30cm). Using a timer is highly recommended for consistency.

    For detailed advice on color temperature and light cycles, check out our full guide: Growing with Grow Lights.

    💵 Payments

    What payment methods do you accept?
    We accept all major credit cards (Visa, Mastercard, Amex), PayPal, and accelerated payment methods like Shop Pay, Google Pay, and Apple Pay. We also offer 'Buy Now, Pay Later' options like Afterpay.