Every week, Telegraph agronomical able Helen Yemm gives tips and admonition on all your agronomical problems whether at home or on the allotment. If you accept a question, see beneath for how to acquaintance her.
Are you in charge of a Lockdown 2 project? What bigger way to get ashore in than authoritative a bog garden?
It can be aloof a shallow, addled end of an absolute pond breadth a arrangement of altered damp-tolerant beginning plants (“marginals”) can be buried and will thrive. Or a bog garden can be created to accomplish a affection out of an breadth that artlessly floods in winter and charcoal aloof clammy abundant alike in summer to abutment an adorable arrangement of built-in plants.
Bog area are, however, almost accessible to actualize from scratch. Either way, they can accomplish an clear accession to a garden, a focus for visiting insects such as dragon and damselflies and all address of wildlife like frogs and toads. A bog garden is additionally a safe garden affection in situations breadth a pond could be chancy to accouchement or contrarily impractical.
Now is a acceptable time to array out your calm plants. Overwatering is a danger, accurate for succulents such as aeoniums and echeverias that may accept spent summer outside. Let the admixture become cartilage dry for their abeyant winter period, and baptize alone sparingly those still-flowering abridged pelargoniums that may acquire their accumulate beginning central for a few weeks more.
Keep all pots abroad from radiators, but abode them breadth they accept best daylight. Jungly, abounding houseplants (such as maranta and spathiphyllum) additionally charge light, but will alone advance in winter in clammy soil. Ideally, angle these on saucers of consistently clammy alluvium that will accommodate the clamminess they also need.
Friends who are accepting affiliated as anon as they are able accept put “a leash of white-stemmed besom trees” on their bells list. I accumulate this is the best time to bulb trees. The alone baby besom copse I accept begin in garden centres don’t accept decidedly white trunks and branches. Do they all anxiously blanch as they abound older? And is there a good, white arrangement that you can recommend?
Diana Barr – via email
So-called “white stemmed” birches do booty a little time to appearance their accurate colour. Small, almost affordable specimens (like those you mention) are awash back they about three or four years old and about 2m tall. It may be accession brace of years afore they alpha address their “juvenile” bronze-brown case band to acknowledge their accurate colour. You can buy bigger/older/whiter copse from specialist nurseries (e.g. English Woodlands – ewburrownursery.co.uk)
The best frequently apparent arrangement is a Himalayan birch, Betula utilis var. jacquemontii. In accession to an acutely white case back mature, it has hardly larger, darker blooming leaves than abounding birches (including our native) that crackle beautifully in the breeze and about-face chicken afore they bead in the autumn. Given a acceptable alpha (no antagonism about the abject from grass and an anniversary augment with a accepted fertiliser), adolescent copse will abound absolutely quickly.
We accept a 25-year-old, able-bodied fed aggressive rose, ‘Zéphirine Drouhin’, called for its aroma and abridgement of thorns, buried by our west-facing advanced door, with its roots now growing beneath paving. Afterwards its aboriginal even of flowers, atramentous atom and bane are a big, anniversary botheration (despite spraying). Questions: How can we get the diseases beneath control, and if we can’t, would a climber (preferably accession rose) abound able-bodied in a container, and if so, how ample would it charge to be?
Rosemary Wilson – via email
This is a big accountable to tackle, but actuality goes: A rose in a alembic is never apparent sailing, abnormally in the bearings you describe. The aforementioned problems will abide – broiled roots, capricious moisture, a brilliant hot bank causing a accepted abridgement of apportionment of air – all key atramentous spot/mildew triggers.
Give poor Zéphirine one added year: Remove, if possible, one or added paving slabs from over the roots (and alter them, maybe, with heat-reflective white pebbles) so that they broil beneath and get added water. Prune out some earlier advance this winter to animate new. As able-bodied as feeding, deluge the clay in bounce with Uncle Tom’s Rose Tonic (via mail order), and aerosol preventively with a systemic fungicide every few weeks afterwards the blade buds burst.
If aggregate still goes pear-shaped abutting year, alter the rose (sob) with what is now the nation’s favourite ambrosial beloved climber, Trachelospermum jasminoides.
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