Posts Tagged ‘Greenhouse & Conservatory’
Flower of the month: Passiflora (the passion flower)
Posted by editor on Sunday, 14 August 2011
At this time of year, hardy Passiflora are in full bloom. A wonderfully exotic-looking plant, the Blue Passion Flower (P. caerulea) has large white flowers and central filaments of purple, blue and white, followed by egg-shaped, orange-yellow fruit, and flowers from July to September. The fruit are edible, but not very tasty and not to be confused with ones you can buy in the supermarkets!
This vigorous, trouble-free climber looks really good in a tropical planting scheme, and will grow best at the base of a sheltered wall in full sun, although they can tolerate some shade. Even the leaves and tendrils look other-worldlly, deeply lobed, dark green and glossy. It is frost hardy but may need some winter protection in cold areas. The eventual height is 10 metres.
The “Passion” in “passion flower” refers to the passion of Jesus in Christian theology. In the 15th and 16th centuries, Spanish Christian missionaries adopted the unique physical structures of this plant, particularly the numbers of its various flower parts, as symbols of the last days of Jesus and especially his crucifixion:
- The pointed tips of the leaves were taken to represent the Holy Lance
- The tendrils represent the whips used in the flagellation of Christ
- The ten petals and sepals represent the ten faithful apostles (excluding St. Peter the denier and Judas Iscariot the betrayer)
- The flower’s radial filaments, which can number more than a hundred and vary from flower to flower, represent the crown of thorns
- The chalice-shaped ovary with its receptacle represents a hammer or the Holy Grail
- The 3 stigmas represent the 3 nails and the 5 anthers below them the 5 wounds (four by the nails and one by the lance)
- The blue and white colours of many species’ flowers represent Heaven and Purity.
There are many other beautiful passion flowers but many of them need to be protected and are best grown in a glass house or conservatory.
Being easy to grow they require little maintenance, but if you don’t want them to reach too high, plant in pots or tubs and let them grow up and cascade over an obelisk.
Choose three to five of the strongest shoots, tying them in to horizontal wires. Once the plant is established, cut back the flowered shoots immediately after flowering to within two or three buds of the permanent framework of the plant. In spring remove dead, misplaced or overcrowded stems.
If you want to find out more about passion flowers, Passiflora: Passionflowers of the World by Torsten Ulmer and John M. MacDougal is a really good read.
Sowing seeds: Part 2
Posted by editor on Wednesday, 14 April 2010
Pricking out seedlings, hardening off and sowing outdoors. There’s still time to sow more half-hardy annuals and vegetables. If you haven’t already, sow under glass courgettes, marrows, pumpkins, sweetcorn and greenhouse cucumbers. Outdoors, sow beetroot and turnips, peas and broad beans, broccoli, cabbage, carrots and chard amongst others. Continue to sow lettuce and salad leaves.
Seeds sown a few weeks ago should be sprouting now and ready for pricking out.
- Fill a seed tray with moist John Innes No 1 potting compost or similar.
- Firm the soil then mark out planting holes with a pencil or dibber, approx 1-1-1/2” (2.5-3.5cms) apart each way.
- Gently ease out a small clump of seedlings, with some of their compost (a small plastic plant label is ideal for this delicate task). Hold each seedling by one of its leaves and tease it away from the others (never handle by the stem).
- Lower the individual seedlings into their planting holes and firm the compost around each. Take care not to damage the roots.
- Label, then water with a fine mist sprayer. Place out of direct sunlight for a day or two, then move into the light. Keep the compost moist, but not wet.
Once established – four to eight weeks after pricking out – harden off young plants.
- Move the tray or pot to a sheltered spot outdoors in fine weather, bringing back indoors at night.
- After a week or so, leave outside permanently, but protect from harsh weather and shelter at night.
- A cold frame is an ideal place to harden off young plants. For the first few days, open the frame slightly, during the day only. Increase ventilation gradually, until by late spring the cold frame is completely open.
All hardy annuals and most half-hardy annuals can be sown directly outdoors.
- Prepare the soil: In autumn, work in some compost or well-rotted manure. Come spring, as soon as the soil is reasonably dry, break up the soil further, sprinkle in a good general-purpose fertilizer, then rake thoroughly creating a fine, crumbly tilth.
- In dry weather moisten the soil a day or two before sowing, then again two or three days after sowing.
- Sowing in drills: Make shallow drills approx 1-1.5cms deep (for planting distances check the seed packet carefully). Sow thinly to avoid too much thinning later. Cover seeds by running the tip of the hoe along the ridge of the drill, then tamp down to lightly firm the soil.
- Once seedlings appear, start to thin out the weaker seedlings.
- Sowing in borders: Prepare a sketch plan of your desired layout, and mark out the sowing areas with a trail of sand or the edge of a hoe.
- Scatter seeds over the area, then rake over gently.
- As with sowing in drills, water the area in advance then again a few days after sowing if the weather remains very dry.
The Garden House sells many hardy and half-hardy seeds – see SHOP on this website for more details. Our seed packets are beautifully illustrated by Brighton illustrator Vicky Sharman – see PICTURES on this website to view the individual seed packets.
Sowing seeds: Part 1
Posted by editor on Thursday, 8 April 2010
Simple, affordable and productive – now is the time to get seed sowing! The only successful means of propagating annual plants is from seed. Most perennials also grow well from seed, however cuttings or division are usually quicker methods of growing these plants.
At The Garden House our favourite annuals are those we come back to time and time again – that we love for their special colour or variety, and that are good easy performers.
Hardy annuals – amongst others consider Ammi majus, Cornflower Black Ball, Cerinthe major ‘Purpurascens’, Eschscholzia californica, Marigold Indian Prince, Nigella damascena ‘Miss Jekyll’ and Sweet Pea Matucana – these do not need heat, so a cold greenhouse is fine.
You can also sow Verbena bonariensis and Nicotiana mutabilis Marshmallow now, but only if you have a propagator or heated greenhouse as these need heat to germinate.
Half hardy annuals – like Cleome Helen Campbell, Sunflower Earthwalker, Cosmos Sensation Mixed, Erigeron karvinskianus and Zinnia Envy can also be sown now until early May.
And don’t forget salad seeds – fast growing and ideal for sowing every fortnight are Lettuce Freckles, Lettuce Marvel of Four Seasons, Lettuce Red Salad Bowl…
Raise seedlings indoors:
By sowing under cover in a cold greenhouse or on a warm window-sill, plants can be brought to flower a few weeks earlier.
- Scrub out your pots and seed trays and rinse thoroughly
- Use specially formulated seed compost (never use potting composts which contain fertilizer that might burn delicate seedling roots
- Sow seeds thinly over the surface – generally sow seeds at a depth equal to their thickness – very small seeds need only a fine covering of soil, larger seeds can be planted deeper
- Very small seeds can be mixed with a little sand before sowing – this makes them easier to see and spread evenly
- Sweet peas prefer minimal disturbance so we sow seeds singly in cardboard toilet roll ‘pots’ – once germinated and 4-5” tall, they can be planted outdoors in their toilet rolls – these soon disintegrate
- Water the compost from below, standing the tray in water until the surface of the compost appears wet, then remove the tray
- Don’t forget to label your seeds!
- Cover with glass or polythene (wipe daily to remove condensation), or newspaper (for warmth without the condensation)
- Stand container in a warm place (possibly an airing cupboard) checking daily until the first seed leaves appear, then remove the cover and move container into the light, maybe on a bright window-sill
- As soon as the first true leaves have developed, the seedlings are ready for pricking out
In a few days time, look out for our Sowing Seeds: Part 2 – pricking out seedlings, hardening off and sowing outdoors.
For certainty, buy your seeds from reputable suppliers – for fun, swop seeds with friends or use the seeds you salvaged dry from your plants last autumn.
The Garden House sells packets of all the above seeds, and many more – see SHOP on this website for more details. Our seed packets are beautifully illustrated by Brighton illustrator and Garden House friend Vicky Sharman – see PICTURES on this website to view the individual seed packets.
Visiting RHS Wisley with my father…
Posted by editor on Saturday, 27 February 2010
Having been on a visit to RHS Wisley last week with The Garden House I decided it was so amazing that I visited again this week, this time with my father (who is nearly 90) in tow.
RHS Wisley has such a wealth of information and this time – only a week later , there were different things to see and new plants emerging , despite the dreadful weather!
The alpines were certainly one of the stars of the show and they are a group of plants that I for one tend to forget about – an alpine is mainly grown between the tree line and the line of permanent snow and the conditions they have adapted to are many; altitude, cold, wind, free draining soil, poor soil and also a short growing season.
It is because of these conditions that they tend to be low growing and have leaves that have adapted to reduce moisture loss, so consequently the leaves are often small, rolled up, hairy or succulent. Some are evergreens which reduces the amount of growth they have to make each season.
Alpines are associated with rockeries, this is an attempt to recreate their natural environment but Wisley have them growing in the alpine houses , this is so they keep dry. They really dislike poorly drained soil and damp conditions.
RHS Wisley also has a wonderful educational value – the labelling is fantastic and seeing so many young children really enjoying themselves in the glasshouse was very hopeful – budding horticulturalists!
Do pay Wisley a visit – anytime of year there is so much to see – whatever your age!
We love Hippeastrum (Amaryllis)…
Posted by editor on Wednesday, 17 February 2010
Seeing Hippeastrum (Amaryllis) bulbs for sale at Wisley yesterday on our Garden House visit reminded us to tell you that it is not too later to enjoy these gorgeous, elegant, large flowered plants at home. Nowadays it is possible to find a great range, both in shape of flower and colour from white, pale pink to deep purple-reds, and oranges.
Quick Tips:
- Planting Period: October until the end of April.
- Flowering Period: Late December until the end of June.
- Flowering time is 6 -10 weeks.
- Larger bulbs produce more flowers.
- Always store un-planted bulbs in a cool place
- Submerge roots and the base of the bulb in tepid water for several hours prior to planting
Amaryllis bulbs are huge, some up to 12 cm across, and they like a tight fit in their pot, so
leave only about 2.5 cm between the bulb and the side, if planting only one. They thrive on being crowded. The pot should be twice the depth of the size of bulb. I plant 3 or 5 (depending on size of bulb) in a Victorian wash bowl for maximum impact!
Amaryllis bulbs have a tendency to rot and drainage is vital so put a handful of crocks in the bottom of the pot. Using a mix of multi-purpose compost and horticultural grit or perlite, plant the bulbs so that one-third of the bulb remains above the surface. Taking care not to damage the roots, press the soil down firmly to set the bulb securely in place. Water in well, although avoid watering the bulb itself as it is vulnerable. Use tepid tap water. If like me you are using a bowl without holes in the bottom of it, you must water with great care so as to avoid water logging.
Regular checks need to be made on the moistness of the compost so it doesn’t dry out. Once leaves start to appear you know that root activity has begun and the plants need regular watering. You can also give a weak liquid feed every month to build up the bulb so you can enjoy its beauty next year.
As Amaryllis originate from South Africa a warm and sunny position, free from draughts, with a temperature of 15-20c, is ideal for good growth. The plant should flower within six to eight weeks. As soon as the flowers start to open, move the plant to a cooler place, 10-15c, to prolong their life. Supporting the developing plants with a ring of twigs (birch or hazel) will both look beautiful, and prevent the tall stems from flopping. With the largest of the bulbs you should enjoy at least 3 consecutive flower stems.
When they are finished cut the old flower stems down to the base, leaving the foliage to continue photosynthesising in a warm and light situation. Continue watering and feeding until the leaves start to shrivel. Stop watering and keep the bulb somewhere dry, cool and dark until the late autumn.
Snowy gardenscape…
Posted by editor on Sunday, 10 January 2010
Pretty though the garden is under a layer of fresh snow, aren’t you just panicking about your plants?! Wondering whether they’ll recover, whether the border-line tender plants you never got around to protecting will survive – in fact wondering if you should get out there and do something about it!
Well the first thing we should do is look after the birds as they struggle to find food. Remember, these same birds will help you by eating grubs and insects when it’s warmer, so why not help them when it’s colder.
Fat balls and fat cakes are good for a range of birds. Seed mixes work well for blackbirds, starlings and sparrows, while peanuts and pieces of dried coconut will suit nearly all small birds in the garden in winter. Remember also that birds need water, so break the ice on your bird-bath or pour on hot water to defrost.
This winter we have watched as weeks of seemingly endless rainfall was followed by two bouts of snowy weather and heavy frosts. Now snow may seem bad but one small benefit is that snow acts as an insulator, protecting plants from the cold and frost.
Nonetheless some damage limitation is sensible. Brush off snow from the branches of large trees, shrubs and hedges.
By doing this you will help prevent them from becoming disfigured by the weight. Clear snow from the roofs of greenhouses or cold frames so that light can get through and so that the weight will not damage the structure.
Try not to walk on the grass. Walking on snow-covered grass can cause damage to the turf beneath and leave unsightly marks on the lawn, and can also encourage the growth of fungal diseases which thrive in the cool damp conditions.
Finally – just enjoy the sheer beauty of your snowy gardenscape – take some photos and make a note in your September diary to have your own Christmas cards printed!
By the way – these photos of The Garden House were taken by our friend, professional photographer Alex Stryczko!