3 packets of seed 140070 £11.95 In stock
When in stock, please allow up to 14 working days for despatch.
15 seedlings 511473-15 £17.95 Delivery mid April
When in stock, please allow up to 2 weeks for delivery. 
30 seedlings 511473-30 £32.95 Delivery mid April
When in stock, please allow up to 2 weeks for delivery. 
More Details

Three of my absolute favourite all-round plants to fill your garden with colour and to pick for the house. You just can’t do better than this trio of ammi, cosmos and Tidal Wave petunia. All flower long and hard with great style and elegance.

This collection contains 1 packet, or 5 or 10 seedlings each of:
Genus Ammi, Cosmos, Petunia
Group/Species bipinnatus, visnaga, x hybrida
Variety Ammi visnaga, Fizzy Rose Picotee, Tidal Wave Silver F1
Type Half-Hardy Annual, Hardy Annual, Tender Perennial
Common Name Bishop's Weed, Mexican Aster, Petunia
Border Position Container, Front, Middle
Soil Type Acid, Alkaline, Fertile, Neutral, Sandy
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained
Height 1.2m (4ft), trailing L.90cm (36in)
Spacing 30-60cm (12-24in)
Sowing, Seeds, Planting Sow under cover in mid spring and plant out after last frosts, or direct sow early May. Half-hardy annuals will require protection until after the last frosts when they can be planted outside. Gradually acclimatise plants to outdoor conditions for 7-10 days before moving to their final position. Choose a spot in full sun or light shade, ideally with moist but well-drained soil. Prepare the final planting area well by adding plenty of organic matter (such as Orgro or home-made compost) and forking it through your topsoil. You want soil with a fine tilth (or texture). Water plants well or soak for 20 minutes in a bucket or wheelbarrow of water if they look dry. Mark out your planting positions with empty plant pots, leaving plenty of space for plants to spread. Dig holes deep and wide enough so that the roots are covered and the crown (or base) of the plant is level with the soil surface. Backfill around each plant and firm the soil gently. You should be able to tug gently on the leaves without the plant lifting out of the ground. Water them in well and water again, with a flood, not a sprinkle, every 5-7 days (if no rain), to encourage roots to be drawn down deep. For containers use as large a container as possible as this won't dry out so quickly and will require less watering. As a general guide we recommend 9-10 plants to a 40cm (16in) diameter container.
Care Tips Pick or deadhead regularly to prolong the flowering period. Keep well watered during dry spells. If growing in containers, apply a balanced liquid feed once a fortnight.
Flowering June - November
Vase Life Ammi and cosmos should last 7-10 days in the vase, no conditioning needed. Pick fresh, straight into water, just as the buds are about to bloom, and do not pick in the heat of the day. Strip all the bottom leaves and some higher ones, otherwise they will yellow before the flowers age. Place out of direct sunlight.
Harvesting Flower production: up to 6 months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest

We don't currently have additional advice on using / growing this particular product on our website, but if you do have a question that isn't answered on this page then please give us a call on 0345 092 0283 and we'll happily chat through any queries you may have, or email us at info@sarahraven.com. Please note all email replies are taking up to 10 working days.


Plant Delivery - When in stock, please allow up to 2 weeks for delivery. 

Seeds Delivery - When in stock, please allow up to 14 working days for despatch.

Click here to find out more information about our delivery rates and times.

Super Long Flowering Collection reviews

* * * * * Average based on 1 review

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Reviewed 2nd January 2021 by Glynis

Looking forward t growing them myself for a change.