Spring Flowering in your Conservatory

By 21st May 2019Advice
Interior of the glasshouse showing pot plants, plant support wiring, stone paving, cast-iron metal gratings & bench tables with potted plants. Convolvulus sp (Morning Glory, blue flower), Ficus sp (Fig)

With the weather getting warmer now is the perfect opportunity to inspire your conservatory growing space. Gather inspiration from the RHS Chelsea Flower Show, the incredible show gardens and even the trade stands can help you visualise colour combinations and discover new plant varieties. 

For the plants in your conservatory to thrive, it’s important to make sure you keep it well ventilated. This is where automatic roof vents and conservatory blinds can come in very useful. Automatic roof vents can be set to your desired temperature and when fitted with a rain sensor you’ll be confident that the unreliable British weather won’t ruin your furniture.

As the conservatory temperatures rise you’ll need to start increasing your watering. The best way to see if your plants need water is to test the soil and see if it’s dry, keeping a regular eye on this is important especially for thirsty plants.


Bougainvilleas are a favourite for their vibrant blossom and they’ll just be coming into flower. Continue to be vigilant about mealy bug, checking the inside of the leaves and stems (particularly the lower ones). If your bougainvillea is suffering against mealy bug you can spray with a soft soap spray, available from garden centres.

I give them a weekly multi-purpose feed that is high in nitrogen. This will be suitable for all your plants as nitrogen helps to encourage healthy plant growth.

Keep going with cuttings as the weather warms up they will root more easily.


The blue Plectranthus is a must for the conservatory, guaranteed to catch your eye with its delicate blue flowers. If you haven’t already given your host plant a good prune then now is the ideal time, along with taking some cuttings. To take cuttings of the Plectranthus cut just below a leaf node, dip in rooting powder and place in a pot with multi-purpose compost and cover with a plastic bag.


Geranium cuttings can be taken now, again cut just below the leaf node from a non-flowering shoot, dip in rooting powder before placing in a pot of multi-purpose compost but do not cover as they rot easily.


Always a “WOW” factor. Plant 3 to 5 in a large pot with a multi-purpose compost and wait for very rewarding results in the mid-summer.


Dipladenia’s will be starting to make a spurt of growth; trim back any leggy tendrils, which will help to strengthen your plant.


Another easy plant to take cuttings from, a showy climber and bug free. Take a cutting from a non-flowering shoot just below a leaf node.


I don’t think I’ve mentioned it before, it comes from Brazil. Its dark green foliage is a dramatic contrast to the stiff upright long lasting carmine red bracts. It is available from mail order companies or from specialist nurseries in the UK.


Amaryllis will be over now, give them a high potash feed to increase bulb size. Once the leaves turn yellow, place the pot on its side and cease watering.

Try your hand at planting IPOMOEA seeds (Morning Glory), a beautiful reliable blue climber.

Generally speaking, now is the time to get full enjoyment from your Marston & Langinger conservatory and spend some time helping your plants thrive.

Stand back and cast a critical eye over the big picture, you may decide you have too much of one colour, or not enough of another.