What reasonably priced plants can I put in large pots?

[KatyMac]

To increase curb appeal for a house going on the market

The pots are about 30 inches wide and 18 inches deep and currently a cat litter tray

I ideally need cheap instant impact for viewings

Tia xxx

It's a bit early for plants. The cheap multi trays may be available at a garden centre. Otherwise I'd buy fake ones from a shop like the Range, B&M etc

Erysimum? Mine have already started flowering and I bought a new one a few weeks in a 9cm pot for £2.99, potted on and it has already doubled in size.

For instant impact with pots that big, I’d go for shrubs or trees. Box, palm trees, olive, Japanese maple, or I’m sure experts will come along with ideas for flowering shrubs.

you can get really nicely sized plants from Home bargains or B&M.

Bedding plants won’t grow large enough to make an impact until June probably.

Supermarkets and the range sell great value large plants. For instant colour there are loads of spring bedding plants at garden centres / supermarkets - primroses / primulas are very colourful. Go along there and pick some cheap spring bedding plants.

Go to a garden centre or supermarket and buy a selection of spring flowering bulbs already flowering in individual plastic pots (not mixed containers). Good options this time of year include dwarf daffodils; grape hyacinths, candytuft, dwarf iris. You can also add other flowering plants such as primulas and foliage plants such as variegated trailing ivy or heucheras (coral bells) for leaf colour; perhaps a dwarf conifer depending on cost.

Take your large containers and add a layer of pea gravel at the base to improve drainage and raise the height. Place the small plastic pots of flowering plants inside the large container onto the gravel, and arrange them until you're happy with the layout, fitting in as many as possible.
Fill in the gaps between the plastic pots with compost, covering the rims with it or with a layer of moss or pea gravel so individual plastic pots are hidden.

As the season progresses, when a plant has finished flowering, lift out the plastic pot and replace it with another plant that is in flower, simply slotting another plastic pot into place.

Hyacinths/daffodils

Thanks everyone great suggestions ill take them shopping wuth me

Agree with pp if it's instant impact then the easiest thing is to head for a garden centre and buy whatever is cheapest that is currently in flower or just starting to flower. Or anything with interesting foliage if there aren't enough flowering ones.
I think shrubs big enough to make an impact could cost a fortune so flowers are probably a safer bet.

Thanks everyone - I went to B&Q and the lovely lady there steered me to the sale section and I filled both pots for about £16

Oh and a small bag of slate