Episode 670- Battling Hydrophobic Soil, Greywater Experiments & Preparing for Autumn Crops

This week’s episode comes from the second week of August, following one of the driest Julys on record. The allotment and kitchen garden are both feeling the strain, with soil baked so hard that water beads on the surface and runs off rather than soaking in. Despite the challenges, progress continues — from experimenting with greywater filtration to planning green manures and keeping established crops alive through the drought.



Allotment Update: Hydrophobic Soil & Survival Mode



The main theme this week is hydrophobic soil — ground so dry and compacted that it actively repels water. Beds have become rock‑hard, making digging, planting and watering difficult. Watering still has to be done by hand with cans, taking up to two hours to give each bed a proper deep soak. It’s heavy work, but essential for keeping established crops alive.



With conditions too harsh for planting out young plants, the focus has shifted to:




Keeping mature crops alive with deep, infrequent watering



Delaying new plantings until the soil can absorb moisture again



Planning ahead by clearing beds for a potato‑specific green manure



Tidying perennial areas like the gooseberry patch and bramble‑filled corners



Preparing for wetter weather so the site is easier to manage when conditions improve




Green manures have been a success in previous seasons, helping reduce pests and disease, and with blight not yet appearing this year, it’s a good moment to prepare beds for next year’s potato rotation.



Kitchen Garden: Greywater Trials & Practical Housekeeping



At home, the drought has prompted a deeper look at greywater reuse. After a failed experiment using water mint as a natural filter, a more structured filtration system has been tested:




A bucket drilled with holes



Layers of gravel, sand, charcoal and straw



Some success in removing contaminants



Some soap residues still present




It’s an ongoing experiment, but a promising step toward making greywater safer for garden use during droughts.



Other practical jobs this week include:




A garage clear‑out, removing broken petrol tools and freeing up space



A renewed focus on repairable, durable or compostable items to reduce waste



Sowing overwintering onions and radish for supporters, though germination is uncertain in the dry soil



Using mulches and compost to help established plants cope with the heat




Recipe of the Week: Smoked Sweetcorn & Courgette Salad



This week’s recipe is a vibrant summer dish that makes the most of seasonal produce:



Smoked sweetcorn and courgette salad with chilli butter croutons




Charred sweetcorn and courgette



Lime‑honey‑mustard dressing



Crisp chilli‑spiced breadcrumbs




It’s colourful, flavourful and pairs beautifully with grilled chicken — a perfect late‑summer plate.



Hydrophobic Soil: Causes, Fixes & Long‑Term Prevention



The episode closes with a detailed look at hydrophobic soil — what causes it, how to fix it, and how to prevent it in future droughts.



Why Soil Becomes Hydrophobic




Organic particles dry out and harden



Soil structure collapses