Your garden: Cacti and succulents

Cacti and succulents can be raised from cuttings made during the next month. Photo by Gillian Vine.
Cacti and succulents can be raised from cuttings made during the next month. Photo by Gillian Vine.
What do in your garden this week.

Vegetables
It can be difficult to plan for next autumn and winter when it does not feel as if this year's winter has been completely shaken off.

Yet from now until late next month is the best time for growing plants that will mature in autumn and be used in the following months.

Savoy cabbages, broccoli, brussels sprouts, silverbeet, parsnips, leeks, salsify and swedes can be sown for autumn and winter use.

Asparagus beds should be starting to bear mature shoots now.

Cut them carefully or the young buds just below the surface will be destroyed.

Do not allow any of the shoots to grow a top or the plant will be finished for the season.

Runner beans can still be sown.

Put them 15cm apart in double rows, with 20cm between rows.

When the beans come through, stake them with straight poles strong enough to withstand the weight of crops in a gale.

Silverbeet grows best in soil enriched with regular watering of liquid manure.

That promotes quick, robust growth and produces a broad mid-rib, which can also be used for cooking.

Sweet corn can usually be safely sown in late October or early November.

The plant is sensitive to cold winds, late frosts and cold, wet soils.

Warm temperatures are necessary for rapid, productive growth.

Dress the soil with plenty of organic material.

To form cobs, the plants must cross-pollinate, so place seeds in double rows or groups of five or six, 15cm apart in each direction.

Zucchini, vegetable marrows, squash and pumpkins can be sown outside now.

All vegetable crops can be improved by regular, light cultivation of the soil around them.

It improves aeration and controls the weeds before they reach seed-shedding maturity.

Flowers
Nasturtiums are good annuals to grow in garden spots where dry conditions make it difficult for many other plants to survive.

Sow the seeds in pairs, 30cm apart and thin to one when they sprout.

Nasturtiums are also excellent for window boxes and hanging baskets.

Dimorphotheca, Eschscholtzia (Californian poppy), Linum, Portulaca and annual chrysanthemums are good plants to grow in poor, sunbaked soil.

Gaillardia, Verbascum, marguerite daisy, Arctotis, Gazania, scented winter-flowering Iris unguicularis (formerly I. stylosa) and Crassula croccinea (a succulent) are perennials to try in dry, sunny spots, while Crocosmia can usually be relied on to provide flowers in season from the poorest soils.

Lilium regale is one of the most popular lilies. Discovered in China in 1903, it is easily raised from spring-sown seed and, in good growing conditions, bulbs will form and produce flowers in two years.

Sow in seed-raising mix that has been saturated with water.

Cover the seeds with 1cm of mix.

Germination may be erratic.

During the first season, seedlings seem to direct all their energies into bulb production.

In the second season, upward growth is more rapid but seldom exceeds 30cm.

A few small flowers may be produced if conditions have been favourable.

Fragrant old-fashioned annuals include night-scented stock, mignonette and tobacco plant (Nicotiana).

Night-scented stocks lack the size and colour of their taller relatives but are easy to grow and do not require a rich soil.

Sow them near a window or deck used on summer evenings.

Mignonette, enjoyed in old-world gardens, must be sown in its permanent position as the plants resent being moved.

Lime in the soil will help strong growth.

Sow the seed sparsely and thin plants out early.

Once flowering, dead-head regularly to encourage a succession of blooms.

Nicotiana is valued for its perfume and trumpet-shaped white or red flowers.

Sow seed under cover this month and transplant in early December.

It can tolerate a semi-shaded position.

Fruit
Tomatoes can be sown under a cloche, then thinned to two or even one plant in each.

Dwarf varieties needing no pruning are recommended.

Taller varieties planted out next month will not need cloche protection.

 

Add a Comment

 

july_carousel_header.jpg

july_carousel_footer.jpg