Controlling a Garden Thug

I recently described the Alstroemeria, a Chilean plant, as an example of a passalong plant, one that is desirable and also prolific in growth.

I also mentioned that this plant “produces large numbers of tubers, so many that it can be difficult to dig into a long-established bed.”

Since then, I have confronted such a bed in my garden.

Alstroemeria

A Cluster of Alstroemeria (click to enlarge)

The Peruvian Lilies (the common name for Alstroemeria) had overwhelmed a border of Avens (Geum chiloense), smaller plants in the Rose family, which are also native to Chile.

Two Aven cultivars, ‘Lady Stratheden’, with rich yellow blossoms, and ‘Mrs J. Bradshaw’, with rich scarlet blossoms, have earned by the Royal Horticultural Society’s Award of Garden Merit.

Over a few years of growth, the Astroemerias had taken over a ten by ten-foot bed. Their tall flower stems had flopped into the garden path, and their tubers had spread under an edging of Sonoma fieldstones.

This is a plant that has much to offer but needs controlling.

As it happened just then, my gardener brought a new assistant, a strong young fellow with gardening experience and a pressing need to be gainfully employed. Perfect!

He made short work of the Alstroemeria bed. Rather than being tentative, I asked him to dig the plants out entirely. I intended to have him reshape the bed, and then replant a few tubers in the spirit of starting over.

There were two varieties of Alstroemeria in the bed: pink (shown in the photo) and apricot. Red, orange, purple, green, and white varieties are also available, with some searching. My helper dug out the pink-flowered plants and left the apricot varieties, which were located apart and not yet causing problems.

This work filled a large green waste cart with foliage, and four garden tubs with tubers! A dozen or more lunch bags filled with washed tubers were snapped up quickly from the Garden Exchange’s giveaway booth at the Garden Faire. The plant will be able to pursue its destiny in several other gardens.

The garden bed appeared to be Alstroemeria-free and ready for a fresh start, but a quick examination discovered a significant number of loose tubers lurking in the bed. Only tedious sifting of the soil might banish this plant from the area.

Assuming a positive attitude, we concluded that this is really an attractive plant after all, and the loose tubers made replanting unnecessary. The tubers surely will sprout in the near future so ongoing control involves plucking out seedlings that appear in the wrong places.

Being something of a “garden thug,” the Peruvian Lily has been recognized as a garden-worthy plant. The Royal Horticultural Society had given its Award of Merit to several cultivars: ‘Apollo’, ‘Coronet’, ‘Friendship’, ‘Orange Gem’, ‘Orange Glory’, and ‘Yellow Friendship’.

The lesson learned from this experience is that some plants, like some people, require more attention than others.

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