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Expertly Grown in the UK
Carefully Hand Delivered
Happy, Healthy Plants Guaranteed
Expertly Grown in the UK
Carefully Hand Delivered

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Penstemon 'Sour Grapes'

Cottage Garden must-have in rich Purple

Grown by Jack

Hereford

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2 options

Choose your size

Penstemon 'Sour Grapes' 2L Pot Perennial Bedding
Penstemon 'Sour Grapes' 2L Pot Perennial Bedding

£8

Out of stock

Perfectly happy plants, or your money back

Specialist overnight plant delivery

The highlights

  • Deep purple flowers on tall upright stems
  • Flowers from July to November
  • Adds height to a Cottage Garden border
  • Attracts bees and butterflies

Description

  • Rich Purple flowers on tall upright stems
  • Flowers all the way from July to November
  • Adds height and colour to Cottage Garden borders
  • Provides vibrant colour right the way up to winter
  • RHS Certified 'Plant for Pollinators' This is an award gifted by the Royal Horticultural Society for plants that are very good at attracting and are beneficial for pollinating insects in the UK.MORE

What To Expect

Supplied as:

Garden Ready Plant in a 1L Pot
1L Pot

Height on arrival:

Eventual height:

Eventual spread:

45cm
45cm

Time to first crop:

Flower colour:

Rich Purple
Rich Purple

Habit:

Clump Forming
Clump Forming

Hardiness:

Hardy to -10
Will endure a normal Winter but may need protection from the hardest frosts
Hardy to -10
Will endure a normal Winter but may need protection from the hardest frosts

Rootstock:

Spacing:

How To Grow

Good pest and disease resistance

This variety can have issues with Slugs and Snails as well as Powdery Mildew. For Slugs and Snails, it is important to keep the area around the plant debris free and as dry as possible, especially at night as slugs and snails love damp conditions. You can use barriers such as egg shells or copper wire to surround the plant to prevent slugs and snails reaching the leaves. It is also a good idea to spray your plant with water which has boiled some garlic in it for around 2 hours. For more serious slug and snail control you can also use specific nematodes that will find the pests and cause them to die. To prevent Powdery Mildew you should try to prevent crowded and humid conditions. Properly space plants apart and get rid of any weeds. Water at the soil and try to prevent soil splashing from the soil onto the leaves.MORE

Full Sun to Partial Shade

This variety will grow in areas of moderate sunlight, including around 4-6 hours of dappled sunlight in partial shade but also grows in full sun.

Fertile, well-drained soil

You will want to mix in plenty of organic matter such as garden compost into the soil before planting. If your soil is particularly clay-heavy and easily becomes waterlogged, add some perlite or gravel into the soil to improve drainage.

Prune regularly

Deadhead the plant regularly to promote continuous blooms. In spring, after the last frost, cut back to just above new shoots, or lowest healthy leaves.

Planting Calendar

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  • Best time to plant
  • Harvest
  • Flower

Hereford

Meet Jack

Perennials born in Herefordshire, blooming in your garden

Our perennials start life in the rolling Herefordshire hills, where Jack and his team trial over 250 new varieties each year to bring you the best performing and most sustainable plants in the UK. With over forty years of excellence, it’s no surprise that they’ve won the HTA Plant Grower of the Year award two years running.

What customers say about us

We do our best to provide you the best experience ever

Growing with Roots

Good to know

Our plants are grown 
in the UK

Specialist UK growers we know and trust grow your plants the traditional way, with organic fertiliser and biological pest control. They pick only the healthiest plants for you, professionally pruning them so that they’ll grow strong and well shaped.

Our plants are delivered overnight

Your plants are sent to you fresh from the field in our plastic free box that’s specially designed to hold them tight, then securely delivered by specialist plant couriers - straight from the grower to your garden within 
24 hours.

We're here to help at every step

We want your plants to have a long and healthy life. Expect easy-to-follow grow guides and videos devised by our team 
of experts.

Perfect plants, guaranteed

We’re confident that you’ll be delighted 
with your new plants. Need help? Alice and her team are here to guarantee you’re 
perfectly happy.

Digging deep to answer your questions

How do I know I'm getting quality plants?

All of our plants are grown in specialist nurseries with the highest standards of plant care and sustainability. We guarantee you'll love them as much as we do! Don't just take our word for it - we've got thousands of great reviews on Trustpilot.

When will I get my plants?

The delivery timescale for each plant is on the web page (near the 'add to basket's button). You'll receive a dispatch email with an exact delivery date once your plants are on their way, so you can get the garden ready.

How will my plants be packed and delivered?

We send all of our orders through a courier network designed to handle plants. Specialist equipment ensures that no plants will be damaged during the packing process and every order is carefully finished and checked by plant-loving humans. Your plants will arrive in the most sustainable packaging possible with minimal to no plastic used.

Where do you deliver?

We deliver to anywhere in Mainland UK for our standard delivery cost. We are able to deliver most plants to Highlands and non UK mainland however this will be at an additional cost. This will be calculated at the checkout. Please note, deliveries to these locations will take longer. Unfortunately, we are not able to deliver to Northern Ireland at present.

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One of our trusted team will get back to you via email
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