Cosmos 'Psyche Mix' Seeds Seeds Piccolo Seeds
Cosmos 'Psyche Mix' Seeds — Default Title
Cosmos 'Psyche Mix' Seeds Seeds Piccolo Seeds
Piccolo Seeds

Cosmos 'Psyche Mix' Seeds

Silky crimson, lavender-pink and white flowers July to October

£2.99

Sold out. FREE tracked delivery on orders over £60

Complete the set up
Description

Key benefits

  • Silky crimson, lavender-pink and white flowers July to October
  • The more you cut, the more flowers the plants produce
  • Golden centres draw in bees and hoverflies
  • Light, feathery foliage on plants about 80 cm tall
  • Packet of about 100 seeds with growing instructions

Cosmos 'Psyche Mix' gives months of flowers from one packet: large, silky blooms in crimson, lavender-pink and white held over feathery foliage from midsummer until the first frosts. Each flower has a golden centre that draws in bees and hoverflies, and the more you cut, the more the plants produce, so they make a generous cut flower for jugs and vases. Cosmos bipinnatus 'Psyche Mix' grows to around 80 cm, with fine, fern-like leaves that keep the plants looking light and airy in a border, a cottage garden or a large patio pot.

Sowing and growing

  • Sow indoors March to April, or directly outdoors May to June once frosts have passed.
  • Sow 5 mm to 1 cm deep.
  • Germination takes 7 to 14 days at 18 to 20°C.
  • Plant out after the last frost, 30 to 40 cm apart, in full sun; average, well-drained soil gives more flowers than rich soil.
  • Grows to about 80 cm tall and 30 cm wide.
  • Flowers July to October; cut or deadhead regularly to keep the blooms coming.
  • Half-hardy annual: frost tender, so sow fresh each year.

What you receive: a packet of about 100 seeds from Piccolo Seeds, with growing instructions on the back.

Browse our full range of flower, herb and vegetable seeds, see more plants for bees and pollinators, or pair it with our summer flowering plants.

How to use
  1. Sow indoors March to April, or outdoors May to June once frosts have passed.
  2. Sow 5 mm to 1 cm deep.
  3. Plant out after the last frost, 30 to 40 cm apart, in full sun.
  4. Cut or deadhead regularly to keep the blooms coming.
Delivery and returns

Every order is hand-packed and sent with tracked delivery.

Changed your mind? You can return unused items within 14 days of delivery. See our returns policy.

Hand-packed and sent tracked
14-day returns on unused items
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Good to know

Frequently Asked Questions

When should I sow cosmos seeds?

Sow indoors in March or April for the earliest flowers, then plant out once the risk of frost has passed in late May. You can also sow straight into the ground in May or June; these plants flower a little later but are just as good.

Do cosmos need deadheading?

Yes, regular deadheading or cutting for the vase keeps them flowering until autumn. Once a plant is allowed to set seed it slows down. Snip just above a pair of leaves and new flowering shoots follow.

Can I grow cosmos in pots?

Yes. Use a pot at least 30 cm across and plant one or two seedlings in multipurpose compost, in full sun. At around 80 cm tall they may need a short cane in an exposed spot, and pots need watering more often in hot weather.

What is your returns policy?

Changed your mind? You can return pots, gifts, accessories and other non-plant items. Email hello@growtropicals.com with your order number within 14 days of delivery, then send the item back within 14 days of telling us. You pay the return postage.

Items must come back unused and in their original condition. If an item has been used, we may reduce your refund by the value it has lost, and for used items this can be the full price.

Live plants cannot be returned because you have changed your mind, but they are covered by our Live Arrival Guarantee.

If something arrives damaged, faulty or wrong, email us with your order number and photos and we will put it right at no cost to you. Full details are in our returns policy.

When will my order arrive and how much is shipping?

Choose your delivery speed at checkout. Express orders placed before 1pm are dispatched the same day, otherwise the next working day. Standard orders are dispatched within 2 to 3 working days and Economy orders within 4 to 5 working days. Once dispatched, every order travels by 24 hour tracked courier.

Delivery is free on orders over £60 with Economy, over £100 with Standard and over £150 with Express. Below that, the charge depends on your basket total and is always shown at checkout before you pay. The full price list is in our shipping policy.

Orders without plants are dispatched Monday to Friday. If your order also includes plants, it goes out Monday to Thursday so the plants are not left in the courier network over the weekend. Delivery can take longer at busy times such as Black Friday and Christmas.

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Why Grow Tropicals

Packed with care and ready to give

Packed with care

Packed with care

Every order is hand-packed in protective packaging and sent with tracked delivery, so it reaches you in one piece.

Free tracked delivery on orders over £60.

Ready to give

Ready to give

Add a gift message at checkout and we will handwrite it and pack it with your order.

Pair it with a plant for a complete gift.

Easy returns

Easy returns

Changed your mind? Send unused items back within 14 days of delivery and we will refund you.

Full details in our returns policy.

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Cosmos 'Psyche Mix' Seeds
£2.99