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Veronicastrum: how to grow and which to plant<\/a><\/li>\n<\/ul>
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$\""Veronicastrum\"$ <\/div>
\u00a9 Torie Chugg<\/figcaption><\/div><\/div> <\/div> <\/section>
When do Verbascum<\/em> flower? <\/strong><\/p>\n
Verbascum<\/em> flower between May and September and grow to heights that range from 30cm to 2m or more. An upright habit, although some rosettes can be up to 90 cm wide. All verbascums enjoy a sunny, open site with good drainage \u2013 excellent for drier gardens. Many have deep tap roots, allowing them to suck up water in drought conditions.<\/p>\n
How to grow Verbascum<\/em><\/h2>\nGrowing verbascums from seed<\/h3>\n
Verbascum strains and species often set copious amounts of seeds so you may want to remove the seedheads<\/a> to prevent unwanted seedlings. If you do remove the flowering spikes your plants often live longer. However the winter silhouettes of taller verbascums can be spectacular in the right setting. Commercially available packets of verbascum are easy to find. If saving seeds from the garden, harvest on warm days at midday and cut the seedhead into manageable lengths. Store the seeds somewhere cool and dry.<\/p>\n
When to sow Verbascum<\/em> seeds<\/h3>\nSow in April to May in warm conditions (roughly 15\u00ba-18\u00baC) in trays of seed compost.<\/li>\n
Press the seeds into the damp compost.<\/li>\n
Move into shade as hot conditions and high temperatures stop germination and halt growth.<\/li>\n
Germination will take between 14 and 30 days.<\/li>\n
Once the seedlings are large enough to prick out (with two proper leaves) transplant them into 7.5cm pots of John Innes No 1 compost<\/a>.<\/li>\n
Grow on in cool conditions (around 15\u00baC) until the roots reach the bottom of the pot.<\/li>\n
If in doubt, upend carefully and look at the root ball.<\/li>\n<\/ul>
Plant them young before the tap root develops. Either plant out into final positions once large enough, watering regularly until the autumn rains come, or plant at the beginning of September. If the strong tap root on a verbascum gets disturbed it fails, so pot-grown plants from a garden centre should be as young as possible. If you do succumb and buy one in full flower, plant it extremely carefully and nurture it well through its first growing season, particularly if it\u2019s been grown in peaty compost.<\/p>\n
How to propagate Verbascum<\/em><\/h3>\n
All verbascums can be propagated from root cuttings taken between late autumn and March.<\/li>\n
Lift your plant and snip away two or three sections of root close to the crown.<\/li>\n
Remove only one-third of the root system or less and replant the original straight away.<\/li>\n
Wash the roots and remove any fibrous lateral growth.<\/li>\n
Cut each into 5-10cm lengths making a horizontal cut at the upper end and an angled cut at the lower.<\/li>\n
The larger surface area of the angled cut helps the plant develop roots and tells you which end is which.<\/li>\n
Fill pots with equal parts seed compost and gritty sand or perlite.<\/li>\n
Insert each cutting so that the horizontal cut surface is just below the surface, about 6cm apart.<\/li>\n
Top dress with 1cm of grit. Water lightly and place in a cold frame. Pot up once true leaves develop: this can take three months or more. Grow on and plant out once large enough. Pests and diseases Mullein moths can eat foliage in summer and they do pupate close\u00a0to the rosette in winter. Pick them off if they offend you.<\/li>\n<\/ul>
The best types of verbascum for your garden<\/h2>\n
Verbascum<\/em> \u2018Petra\u2019<\/h3>\n
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The best types of verbascum for your garden<\/h2>\n

Verbascum<\/em> \u2018Petra\u2019<\/h3>\n
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Verbascum gnaphalodes\u00a0<\/em><\/span><\/h3>\n
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\u00a9 Jason Ingram<\/i> <\/span>\n<\/div>\n

Verbascum nigrum<\/em><\/span><\/h3>\n
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\u00a9 Andrea Jones<\/i> <\/span>\n<\/div>\n

Verbascum<\/em> \u2018merlin\u2019<\/span><\/h3>\n

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A rose-madder verbascum with pink to lavender flowers, finely edged in brown. Bred by Vic Johnstone and Claire Wilson, it did well in 2007-2008 RHS trials. H 90cm.<\/p>\n
Verbascum<\/em> \u2018June Johnson\u2019<\/span><\/h3>\n

Verbascum<\/em> \u2018June Johnson\u2019<\/span><\/h3>\n

Verbascum blattaria <\/em>f. albiflorum<\/em><\/span><\/h3>\n
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\u00a9 Jason Ingram<\/i> <\/span>\n<\/div>\n

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Several stems of white flowers smudged in smoky damson-plum, studded with golden stamens. Light, airy and largely biennial. Best in dry gardens or it can flop. H 120cm.<\/p>\n
Verbascum<\/em> \u2018Clementine\u2019<\/span><\/h3>\n

Verbascum<\/em> \u2018Clementine\u2019<\/span><\/h3>\n

Verbascum Chaixii<\/em> \u2018Album\u2019<\/h3>\n

Verbascum phoeniceum<\/em> \u2018Rosetta\u2019<\/span><\/h3>\n
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Long wands of flowers above a rosette of leaves. Seeds freely. May flowering \u2013 if deadheaded may re-bloom in autumn. Easy to grow from seed. H 40cm-60cm.<\/p>\n
Verbascum<\/em>\u00a0 \u2018cherry helen\u2019<\/span><\/h3>\n

Verbascum<\/em>\u00a0 \u2018cherry helen\u2019<\/span><\/h3>\n

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This is a sport from \u2018Helen Johnson\u2019 that produced cherry-pink flowers gently washed in warm brown. H 90cm.<\/p>\n
Verbascum<\/em> \u2018Valerie Grace\u2019<\/span><\/h3>\n

Verbascum<\/em> \u2018Valerie Grace\u2019<\/span><\/h3>\n