You Garden Perennial Hardy Penstemon Collection - 12 Plugs

Yes, they are highly suitable for containers, provided the pots have drainage holes and you use a high-quality multipurpose compost.

Yes, these varieties are winter hardy, though applying a dry mulch in late autumn is recommended to protect the root system during the first year.

Water when the top 2-3cm of soil feels dry. During hot summer spells, check pots daily as they can dry out faster than plants in the ground.

A balanced, liquid fertilizer applied during the growing season can help boost flower production, but do not overfeed, as this can lead to excessive foliage growth.

With a spread of 40cm, space them at least 40-45cm apart to allow for proper air circulation and healthy development.

Yes, as perennials, they are designed to return every year, typically becoming larger and more established with each season.

This is often a sign of overwatering or poor drainage; ensure the soil is well-drained and allow the top inch of soil to dry out between waterings.

Check if the plant has been dead-headed. Removing faded blooms is essential for encouraging a second flush of flowers throughout the autumn.