Mellow Yellow

Helianthus ‘Miss Mellish’ AGM

The perennial sunflower, Helianthus, is one of my favourite late summer plants and they are just so cheerful! How can you not smile when you look at this picture!

The three Helianthus most commonly offered are ‘Lemon Queen’ a big, clump forming brute of a plant which runs riot in rich soil; ‘Monarch’ an enormous badly behaved double; and my favourite, ‘Miss Mellish’, still a rampant thug but such a pretty lady! Other varieties include ‘Capenoch Star’ AGM and ‘Carine’ which is similar to ‘Lemon Queen’ but slightly shorter. Helianthus is a good plant for poor dry soils and, as can be seen from this picture, happily grows even in the dessicated soil beneath a conifer hedge. It really is a reliable star performer.

Helianthus maximilianii

There are several less common Helianthus cultivars worth seeking out from specialist nurseries such as the tall ‘Maximilianii’ generally with fewer flowers and apparently a prolific self seeder;  H.  salicifolius with willow-like feathery foliage and chocolate brown centred flowers which love a sunny position at the back of a dry border, and the smaller, better behaved dwarf variety ‘Happy Days’ for a moist, rich soil in the middle of the herbaceous border.

Of course, the most common  perennial sunflower  relative is probably the Jerusalem Artichoke, Helianthus tuberosus, which is better known for it’s edible tubers than it’s flowers but is a perennial sunflower nevertheless. Its comparatively small and insignificant yellow flowers emerge when the plant is at it’s tallest, sometimes over 8 feet, and are often difficult to see.

If you want tall reliable colour in late summer and don’t mind a bit of yellow, these prairie daisies are hard to beat. It is the ideal plant to colonise a difficult or neglected area of poor soil or to hide an ugly shed providing height for screening, dark green foliage from mid spring and late summer colour until the first frosts.

Phew-eniculum vulgare!

It seems from what I have read, that the smell of Fennel, Foeniculum vulgare (hence the pun!) is one of those you either love or hate. I therefore consider myself lucky at the moment because the acid yellow umbelliferous flowers have given way to thousands of seeds which are now ripening on the huge clump by the back gate and there is the most gorgeous smell of licorice / aniseed as we brush past it each morning to take the dogs for a walk.

The tall feathery foliage on thick branching stems makes a bold architectural statement in any garden. It loves a well drained poor soil in full sun and, unfortunately for some, seeds itself freely around the garden. I think the smell takes me back to my childhood eating Bassett’s Licorice Allsorts and aniseed balls!

Bidens aurea ‘Hannay’s Lemon Drop’

This variety of the popular north american Bidens aurea was introduced many years ago by Hannay’s Nursery in Bath and is one of the hardier forms which is why I decided to try it here in the chilly Cotswolds. The seed, which is barbed helping it to hitch a ride from grazing animals, came from last year’s Cottage Garden Seed Exchange and was easy to germinate into very sturdy little plants. However, during April, May and June they just sat there at about 30cm tall waiting for some warmth and sunshine.

I had read that this form of Bidens can run and become a bit of a thug if it likes your soil and aspect so I decided to plant it carefully in several very different parts of the garden. To my total surprise, it has done best with it’s feet in sticky clay and is now 120cm high and still growing. The flowers are a lovely lemon yellow tipped with white, similar in size and shape to Coreopsis to which it is closely related.

 

The dark green foliage and wiry green stems makes me wonder why this daisy species is an ‘aurea’ which usually means ‘golden’ or ‘yellow’ foliage. Perhaps it refers to the yellow flowers although this would be a departure from the usual nomenclature rules.

Received wisdom suggests this variety should be treated like a Penstemon, often hardy enough but take cuttings just in case. Also, don’t cut the old foliage down until April to give some protection over winter. I am going to collect my own seed and grow a few new plants each year given how easy they are to propagate.

The tall airy stems are strong and upright and do not require staking, a definite bonus in my windy front garden, and the flowers seem to last for ages attracting bees and other pollinating insects. Overall, a very garden-worthy plant for late summer colour which blends in well with reds, purples, yellows and whites and doesn’t mask the plants behind it. I have it planted in front of my Photinia hedge with white and dark purple Cosmos, Agastache and Nicotiana alata and alongside permanent shrubs of Euonymus japonicus and Amelanchier lamarckii. It just seems to work.

Plant of the day

There are so many beautiful flowers in the garden at the moment but my plant of the day today is the dainty Gaura lindheimeri. There are many white and pink forms of Gaura and I have both but prefer the tall, plain white variety called ‘Whirling Butterflies’ because of it’s simplicity and visibility. Sitting here in my kitchen I can see the plant gently waving it’s wiry stems covered in small white butterfly shaped flowers a good 20 metres away.It seems to like my alkaline clay soil and grows up to 150cm high in full sun and, being on the edge of the footpath, is much admired by passers-by. The pink flowerbuds start opening progressively in June and continue up the lengthening stem into autumn with the last few at the tips still around in November. No scent unfortunately, but you can’t have everything!

I find Gaura to be quite hardy here but it is so easy to grow from seed that it wouldn’t matter if you lost some in a cold winter. They flower in their first year and grow into a good sized clump if they are happy. They seem to work well in a mixed border and act as a foil for other bolder colours and leaf forms. They don’t need deadheading and I wouldn’t be without them.

Plant of the Day – Cosmos

One of the easiest plants to grow and one of the most reliable to flower and put on a great show all summer is Cosmos. I think my favourite is ‘Purity’ simply because it has such pure white flowers which highlight and accentuate the rich colours of other plants.

Equally stunning are the single and double pinks and purples which seem to come true from seed every year despite the bees hopping from colour to colour all day long.

Cosmos ‘Double Click Cranberry’

This year I tried a couple of new varieties from which I will collect seed, the unusual ‘Double Click Cranberry’ and the pretty ‘Picotee’ with delightful pinky purple edges.

Cosmos ‘Picotee’

The taller varieties can get a bit ‘top heavy’ and begin to lean or even topple over in high winds but they usually survive if pushed back up and staked. The shorter varieties make colourful front of border plants. They are all very attractive to pollinating insects, flower for months if deadheaded regularly, are drought tolerant and will grow in almost any soil. What more could any gardener ask for?

Plant of the Day

Japanese Anemones

I have two small collections of Anemone x hybrida which have gradually spread their underground rhizomes to form bigger clumps. White ‘Honorine Jorbet’ is in a shady spot by the back gate and set off by the feathery foliage of Fennel, and pale pink ‘Richard Ahrens’ which enjoys the north side of a large Garrya elliptica ‘James Roof’ in the middle garden.

Both varieties are beautiful in their simplicity, and despite their fragile appearance are sturdy, weatherproof plants which are reliable and fully hardy. They light up a shady spot and provide height and colour where others might find the conditions difficult. They are easily propagated by taking root cuttings when flowering is over in November.

Plant of the Day

My plant of the day is Gladiolus callianthus commonly known as the Peacock Orchid. It is a simple, beautiful, pure white flower with a maroon centre and strappy leaves. Unlike the usual gladioli where a straight stem is a must, these charming cousins from the high mountains of central Africa droop modestly.

Sometimes also called Acidanthera murielae or Abyssinian sword lily, they have a light scent, especially in the evenings, which may indicate it is a moth attractor.

The corms are not fully hardy but it will be easy to lift them in November and store them in the shed in a paper bag with some shredded paper until spring. I will try them as cut flowers when a few more come out to see how long they last. They are supposed to be good and, being white, would work on their own or with other stronger colours.

Update 31 August 2012

The blooms work well as cut flowers, particularly against a dark background as this photo shows