'Just Julia' Sweet Pea Plants

• Variety: Just Julia
• Type: Spencer
• Colour: Mid-blue – shifts between a clear blue and a soft blue-mauve depending on light
• Scent: 4/5 (Parsons) – sweet and persistent
• Flowers: Large, gently ruched rather than heavily frilled. 3–4 per stem
• Stems: Long and strong – weather-resistant
• Height: 2m+ (7ft) with support
• Flowering: Late spring to September with regular picking
• RHS AGM: Yes
• Show class: Spencer — NSPS Class 9a, Blue (Mid)
• Bred by: Roger Parsons, 2011
• Sold as: Jumbo plug plants, hand-sown by us
• Plant outdoors: After last frost
• Delivered: March to May by next-day courier

Just Julia – The Blue That Changes with the Light

True blue is the holy grail of sweet pea breeding, and Just Julia comes closer than most. In good light it reads as a clear, honest mid-blue – not lavender, not mauve, not purple pretending to be blue. As the light changes, a soft blue-mauve undertone comes forward, but the dominant impression is always blue. Roger Parsons bred it and introduced it in 2011, and it filled a gap that exhibitors and gardeners had been waiting for.

The plant is tough in the best sense – it stands up well to wet and windy weather, which in a British summer is not an academic quality but an entirely practical one. Stems are long and strong, the habit is vigorous, and it carries three or four well-spaced blooms per stem with good consistency. The petals are gently ruched rather than heavily frilled, which gives each bloom a sense of weight and substance. It holds the RHS Award of Garden Merit and is classified as a Spencer in NSPS Show class 9a (Blue).

Colour and Light

The blue shifts with the light in a way that photographs rarely capture. In morning sun, Just Julia is a clean, clear mid-blue. By midday the blue-mauve undertone surfaces, and in overcast weather it leans toward a soft lavender-blue. At dusk it deepens. This range within a single colour gives it a quality that flat blues lack. There is always something happening in the flower.

As individual blooms age, the colour lightens slightly. A stem in water will carry several tones at once: the freshest blue at the top, a softer, more washed-out shade further down – which makes it interesting in a vase without being complicated. The scent is rated 4 out of 5 by specialist growers, which places Just Julia among the more fragrant Spencers. Sweet, persistent, and noticeable from a bunch on the table.

Pairing Ideas

Mid-blue is one of the most versatile colours in a sweet pea display. For a classic cottage-garden effect, pair Just Julia with Mollie Rilstone (cream with a pink picotee) and Valerie Harrod (warm coral-pink) – the blue anchors the scheme while the warmer tones lift it. For a cooler, more formal palette, Jilly (ivory-cream) and White Supreme (clean white) let the blue take centre stage.

On a fence or pergola, grow Just Julia alongside a scented honeysuckle for a combination of evening fragrance that will stop you in your tracks. The blue of the sweet pea and the cream-gold of the honeysuckle complement each other beautifully, and the honeysuckle gives the sweet pea tendrils something to grip. Full planting and training advice is in our sweet pea growing guide.

Why Buy Your Sweet Pea Seedlings from Ashridge?

We have been growing sweet peas in Somerset since the early 2000s. The seed - which we collect - is hand-sown at two seeds per plug and the weaker seedling is removed. Every plant is then pinched out to encourage bushy growth and hardened off before dispatch. What you are buying are sturdy, garden-ready jumbo plug plants that have had the best possible start.

We send your sweet peas out by next-day courier between March and May, packed in purpose-designed recycled cardboard packaging. The moment they arrive, they are ready to go into the ground or a container. If anything is not right, we have real people on the phone in Somerset who will sort it out. We hold a Feefo Platinum Service Award and have been named a Which? Best Buy plant supplier – endorsements that came from our customers, not our marketing team.

Frequently Asked Questions

Does Just Julia hold the RHS Award of Garden Merit?

Yes, awarded after the RHS Wisley Trials, where it also received a First Class Certificate. That is two independent endorsements from the same set of trials, which does not happen often.

What colour is Just Julia?

Blue is always a hard colour with sweet peas as there is not really a "true blue". Depending on the light, Just Julia varies from what looks like a very good mid-blue, maybe with a touch of lavender, to a blue mauve, maybe with a touch of lilac. Older blooms lighten, so a single stem carries several tones at once. Photographs rarely capture it accurately – it is one of those colours you have to see for yourself.

How scented is Just Julia?

Rated 4 by specialist growers, which puts it well above average for a Spencer. The fragrance is sweet and persistent – a bunch on a table will scent a room through the evening without being overwhelming.

Is Just Julia good for cutting?

Excellent. Long, strong stems and weather-resistant petals make it one of the more reliable cut-flower Spencers. Cut in the morning, strip the lower leaves, and stand in clean water. The blooms hold well and the colour change in water is part of the charm.

Do sweet peas come back every year?

No, annuals only. Just Julia flowers for a single season, from late spring to early autumn, and then it is done. A perennial species of sweet pea does exist but has no scent at all. New plants each spring is the way to go. Browse our full sweet pea collection for this year's varieties.