Cosmos Razzmatazz Mixed | 5 Large Plug Plants

Cosmos Razzmatazz gives a colourful display all summer long and has pretty semi-double flowers with shades from violet and lilac pink to pink blush and white, above its typical feathery-like foliage. A cottage garden favourite, Cosmos Razzmatazz is very attractive to bees and butterflies and is good as a cut flower too. Grow in a sunny spot in beds and borders.

See the tabs above or click these links for information on: Delivery, Size Guide and Advice.

Brand:  Brookside Nursery
Supplied as:  5 Large Plug Plants
Habit:  Upright
Eventual Height:  80-100cm (32-40")
Eventual Spread:  50cm (20")
Position:  Full Sun
Primary Flower Colour:  Mixed
Suitable for Hanging Baskets?  No
Suitable for Patio Containers?  Yes
Scented?  Not Scented
Plant Type:  Annual
RHS Plants for Pollinators:  Yes
Botanical name:  Cosmos bipinnatus

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Free UK delivery on all orders over £50!

For all orders under £50 in value we make a one off P&P charge of £4.95 per order.

Smaller orders are dispatched via Royal Mail 1st Class, larger orders via Parcelforce 24.

We are the only online plug plants supplier to offer a choice of a specific dispatch week for your order. When placing your order, use the drop down box above to select your required dispatch week. You can also alter dispatch weeks in the shopping basket.

All our plug plants are shipped in specially designed packaging to keep the root system in place and the foliage protected in transit.

For more information about plant deliveries, please click here.

For more information about international and Northern Ireland deliveries, please click here.

Size guide - Pack of 5 Large Plug Plants 

Pot Ready, Large, Healthy plants individually rooted in large plugs of compost. Ideal for planting into baskets, containers or small areas in the garden. Best results achieved if grown on for a short while in 9cm/10cm pots prior to planting out if planting straight into garden borders. Tender varieties will need protecting from frost. Compost volume around 4-5cm deep x 3-4cm square. Foliage height 5cm-12cm (depending on variety). Full growing instructions are provided.

General Growing Advice

Using a good quality multi-purpose compost, pot up your plugs into 10cm pots. Once your plug plants have been potted on and labelled, water them in well and grow on for around 5-6 weeks.  Water once the compost starts to dry out.

If preferred you can pot on the plugs into hanging baskets, flower bags or pots. Add a slow release plant food like Miracle-Gro Slow Release All Purpose Plant Food  to your compost which will give extra nutrients for strong and healthy plant growth.

Keep plants frost free until mid/late May and then harden off before being placed in their final positions when the risk of frost has passed in your area.

Water as necessary giving a liquid feed such as Neudorff Organic Plant Feed as instructed throughout the growing season.

***For packs of 20/40 plug plants gently remove the small plugs from the tray by pushing up from the bottom using a pencil.

Cosmos Specific Advice

Regular deadheading of cosmos will encourage and prolong more blooms. If deadheads remain then the cosmos will self-seed. Do not over fertilise as this will promote more foliage growth rather than more flowers. Pinching out the tips at around 15-20cm will encourage bushier plants.