Aster novi-belgii Tonga (Michaelmas Daisy) 1l

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Michaelmas Daisy

Aster 'Tonga'  will extend the season of interest in your garden right into late autumn.

Symphytorichum 'Tonga', is one of the Island Series of dwarf Michaelmas daisies, also known as asters. Flowering slightly earlier than a common aster, but still producing flowers continuously right into late autumn, it's a wonderful addition to the late-summer garden where it will add fresh colour to beds, borders and containers long after many other summer flowers have faded. With a very compact habit, this bushy clump-forming perennial is best suited to a forefront position in borders and also looks great in patio pots. From late summer to mid-autumn it produces clusters of double, bright purple flowers which are highly attractive to bees and butterflies. Flowering reliably every year, it's a great value plant that just keeps on giving for many years. These flowers are also great for cutting, with an excellent vase life and stunning vivid colour.

A useful flowering perennial for low-maintenance gardens where it will provide a brilliant show of colour with very little fuss.

Key Features

Plant Type: Herbaceous

Hardiness: H6 Hardy. Minimum temperature -20 to -15

Plant Height & Spread (at maturity): H 30cm x W 30cm (Mature age: 2 years)

Foliage Colour: Green

Flower Colour: Purple

Fragrant Flower: No

Aromatic Foliage: No

RHS Award of Garden Merit: No

RHS Perfect for Pollinators: No

Foliage Type: Deciduous

Soil Type: Chalky, Clay, Loam, Sandy, Acid, Alkaline

Soil Drainage: Moist but Well Drained

Light Exposure: Full Sun, Part Shade

Planting Style: Cottage Garden, Informal Garden, Flower Beds & Borders, Containers, Cutting Garden.

Season of Interest: Autumn, Summer

Flowering (from - to): August-October

Plant Care & Advice

Michaelmas Daisies grow best in a sunny spot and in soil that is moist but well drained. When planting in the ground add well rotted manure or garden compost to the soil along with a handful of general fertiliser to give your plant the best start.

Use a loam based compost such as John Innes No3 when planting in containers. Water new plants twice a week in dry weather until established and those in containers more frequently.

Plants in containers should be fed once a week with a suitable liquid feed through summer. Add a handful of general fertiliser to the soil around plants in the ground once a year in late spring and top up the soil with mulch of garden compost or rotted manure.

Faded flowers can be removed as need be to encourage fresh ones and the whole plant can be cut back to the ground in late spring once the new leaves are seen.