Product description
Enjoy the thrill of surprise and discover new garden favourites with our Perennial Mystery Box, containing six established plants in 9cm pots. Part of the joy of gardening is the excitement of the unknown, and our nursery team hand-picks a secret assortment of reliable perennials just for you. Expect a dynamic, high-value mix of vibrant summer flowers and architectural foliage ready to burst into life year after year.
These adaptable garden plants generally thrive in well-draining soil enriched with organic compost and enjoy positions ranging from full sun to dappled shade. Water them thoroughly after planting to help the roots settle, and keep the soil consistently moist during their first growing season. As herbaceous perennials, most varieties will naturally die back underground in winter before returning with bigger, stronger growth every spring.
Please Note: Images are for illustrative purposes only and designed to be a representation of the item(s) being sold. Depending on seasonality, deciduous plants may be supplied in their dormant state and without leaves. Plants may also be pruned back, lower than stated heights, to encourage new growth.
Garden Plant Size Guide

Plants in larger pots can be multiple years older than their smaller counterparts with more mature root systems and foliage. This makes them able to thrive as a full size plant in your garden quicker than smaller alternatives.
The most common size of pot that garden plants come in are 9cm/1L/3L/5L this is in reference to the diameter at the top of the pot.
9cm potted plants still remain the most popular cost effective option though, they just may take a little patience to allow them to grow into full maturity once planted in your garden.
Plant specs, care guide & tips
Key features
Specifications
When to plant
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
Planting and period of interest times are general guidelines and may vary based on your location and conditions. For best results, consult local gardening resources.
Instructions
Top Tip
Regularly 'deadhead' or snip off faded flowers from the plants in your Perennial Mystery Box throughout the summer. This stops them from setting seed and forces a vibrant second flush of blooms.
How to Water
Water your Perennial Mystery Box regularly during its first season to establish strong root systems. Give the plants a deep soak once or twice a week rather than a light daily sprinkle to encourage deep, drought-resistant roots.
How to Plant
Select a sunny or partially sunny border for your Perennial Mystery Box. Dig holes for the 9cm pots, spacing them 30cm to 45cm apart to allow for growth. Position the plants level with the soil, backfill firmly with compost, and water well.









